Help me (正确形式填空)1.Swimming and bike riding (be)both both good activities during summer months.2.some people think that banning things (be)useless.3.The questions raised at the meeting (be)very important.4.Too little brushing (cause)tooth

Help me (正确形式填空)1.Swimming and bike riding (be)both both good activities during summer months.2.some people think that banning things (be)useless.3.The questions raised at the meeting (be)very important.4.Too little brushing (cause)tooth
Help me (正确形式填空)
1.Swimming and bike riding (be)both both good activities during summer months.
2.some people think that banning things (be)useless.
3.The questions raised at the meeting (be)very important.
4.Too little brushing (cause)tooth decay.
5.One of the teenagers (have)this to say about the experience.
6.Three well-balanced meals each day (include)milk,meat,fresh vegetables,and fresh fruit.
7.There (be)a lot of violence in that city.
8.Plenty of exercise (make)us look and feel better.
9.Articles for daily use (be)in abundant supply.
10.What's troubling me (be)that I don't have much experience in this kind of work.
麻烦请写请答题时加上为什么,
填空部分是扩号全面一个地方。
麻烦请在答题时加上为什么，

Help me (正确形式填空)1.Swimming and bike riding (be)both both good activities during summer months.2.some people think that banning things (be)useless.3.The questions raised at the meeting (be)very important.4.Too little brushing (cause)tooth
1.Swimming and bike riding (are)both both good activities during summer months. Swimming 和bike riding是可数的两件事情.所以用are
2.some people think that banning things (is)useless. 正确理解句子含义,是：对事情的禁止是无用的.所以be的主语是个动宾短语banning things,所以要用单数形式.如果理解成“被禁止的事”是无用的,那就会误用复数are了.
3.The questions raised at the meeting (are)very important. be的主语是The questions.所以用复数形式.raised at the meeting 是动宾结构的短语充当questions 的后置定语.
4.Too little brushing (causes)tooth decay. 主语是Too little brushing.不可数.
5.One of the teenagers (has)this to say about the experience. one of,明显的是一个,单数形式.
6.Three well-balanced meals each day (include)milk,meat,fresh vegetables,and fresh fruit. 主语是three well-balanced meals,是复数,而非each day 单数.
7.There (is)a lot of violence in that city. violence,暴力行为,是不可数名次,所以选择单数形式.
8.Plenty of exercise (makes)us look and feel better. 做训练、运动讲时是不可数的.
9.Articles for daily use (are)in abundant supply. Article做用品、物件讲是可数名次.而且题目本身用的是复数形式.所以选择are
10.What's troubling me (is)that I don't have much experience in this kind of work. 你看what后面都选择用‘s了,当然你得用单数形式!都不用考虑了!

1 are 2 is 3 is 4 causes 5 has 6 include 7 is 8 makes 9 is 10 is

1 are 2 is 3 is 4 causes 5 has 6 include 7 is 8 makes 9 is 10 is 主渭一致 不定式 从句 动名词一个为单数,多个复数