While we _________, we saw a UFO land on a street.
#41211
A
were shopping
B
shopped
C
are shopping
D
shop
推荐题目
If it ______________ tomorrow, I would stay at home watching TV.
#66958
A
should rain
B
rains
C
was to rain
D
will rain
----Don’t look down upon Bob. He has his own advantages. ----Oh, yes. ______ others are weak, he is strong.
#67477
A
If
B
Where
C
When
D
Though
________ your composition carefully, some spelling mistakes can be avoided.
#67555
A
Having checked
B
Checking
C
If you check
D
To check
Some pre-school children go to a day care center,____ they learn simple games and songs.
#73223
A
then
B
there
C
while
D
where