--_________ do you do some outdoor activities?--Once a week.
#39135
A
How long
B
How much
C
How far
D
How often
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— How many left-behind children are there in your class? — .
#38901
A
Nothing
B
Nobody
C
Neither
D
None
Our plan is to plant 50 trees. And we have planted half of them .
#35419
A
the other day
B
yet
C
so far
D
in the past
—Hi, Jack!—Hi, Eric! You ________ really quiet, but now you are very outgoing.
#43397
A
used to
B
use to
C
used to be
D
use to be