please _____careful ! A be B is C /
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please_____careful!AbeBisC/please_____careful!AbeBisC/please_____careful!AbeBisC/
please _____careful ! A be B is C /
please _____careful ! A be B is C /
please _____careful ! A be B is C /
be
这是祈使句,用动词原形
A。祈使句,要用动词原形,所以用be动词原形Be。
祝进步
A
be careful是固定搭配,意为“小心”,全句意思是“请小心”
please _____careful !
A be B is C /
本题选【A】这是考得祈使句。
祈使句一般用动词原形开头,省略主语
am/is/are的动词原形是be所有选A