While the boy ______ down the street, the UFO _____ . 
#41890
A
was walking; was landing
B
walked; landed
C
was walking; landed
D
walked; was landing
推荐题目
The student is _________ see the teacher because he_________a mistake.
#40178
A
afraid of; has
B
afraid to; has made
C
afraid to; make
D
afraid of; made
I don’t know when he ____. But if he ____, I’ll ring you up.
#41562
A
comes, will come
B
will come, will come
C
comes, comes
D
will come, comes
I have been to London. I ____________ there last month.
#39948
A
go
B
went
C
have gone
D
will go