—Has Sam finished his homework today?—I have no idea. He ________ it this morning.
#104746
A
did
B
has done
C
was doing
D
had done
推荐题目
Her sister left home in1998, and since.
#101660
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has been heard of
--- Have you ever been to Tibet?--- Yes. I ____________ there three times in the year 2008.
#103221
A
went
B
have gone
C
have been
D
had been
– I’m leaving for Beijing next week.– How long ______ there?
#101707
A
have you stayed
B
are you staying
C
had you stayed
D
did you stay
According to the survey, modern industry_____ quickly in developing countries in the past half century.
#101884
A
develop
B
has developed
C
had developed
D
developed
— The food in the restaurant is horrible. If only we ______ to the students’ canteen. — But the food isn’t everything. Isn’t it nice just to get away from all the noise?
#102670
A
would go
B
have gone
C
had gone
D
will go