问题
How many times have you been to China? —In fact, it is the first time I __________ here
A:have been
B:am
C:had been
D:was
B:am
C:had been
D:was
正确答案是：
同类题型
Where is my watch I _______ find it. —-Don’t worry. It must be somewhere in your room.
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We all should make a contribution to ______ our environment.
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We give dogs time, space and love we can spare. — . Dogs are always our loyal friends.