be an enemy 后面是加to还是of?be a friend 后面加to还是of?

be an enemy 后面是加to还是of?be a friend 后面加to还是of? be sure to后面是加名词还是动词啊 这个to是介词还是不定式? happen to后面是加 be吗还是其他she couldnt leave earlier,becase there happened ---an english test.A to be B to have C to take D to hold be inclined to 后面加动名词?---------------还是加动词原型?--------------- be加过去分词后面加to do 还是do? be sensitive后面加什么 是to还是in还是of或者其他 be doomed to后面加的是名词还是动词?好像都可以 xiexie! be accustomed to后面加do sth.还是doing sth? be honoured to 后面加动词原形,还是ing形式 be used to后面加do还是doing It‘s going to be( )in beijing.be后面加形容词还是加动词?如果It‘s going to ( )in beijing后面加形容词还是加动词? Will后面加be还是加amisare be keen on后面加什么be keen on后面加doing sth;do sth;还是to do sth? happen to后面是加 be吗还是其他she couldnt leave earlier,becase there happened ---an english test.A to be B to have C to take D to hold请说明你选择的理由,还有正确的是B,但为什么是呢 be harmful 后面加to 还是forSmoking is harmful to your health.这个句子用to 英语语法里如何区别be adj后面加doing还是to do?比如 be worth doing be useful to是加do还是加ing? be practicing后面该加to do 还是ing呢还是动词原形呢