-- Who do you think ___ the book here?  --- It may be John. He was sitting here all the morning.
#103608
A
has left
B
leaves
C
had left
D
was leaving
推荐题目
Some policemen were sent there to ________ the villagers ________ the trees.
#99026
A
keep; cutting down
B
prevent; cutting down
C
prevent; to cut up
D
stop; to cut up
 ------Why do you turn back?------ Oh, the bridge ahead_______.   
#101562
A
is being repaired
B
is repairing
C
is repaired
D
is being repairing
Listen to the two girls by the window. What language ________? 
#100338
A
did they speak
B
were they speaking
C
have they been speaking
D
are they speaking