We are not supposed ______ basketball on Sundays.
#49463
A
to play
B
playing
C
with playing
D
played
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There are so many kinds of pens in the shop ,I can’t decide ______.
#50047
A
when to buy
B
where to buy
C
what to buy
D
which to buy
Don’t forget to lock the door if you are the last person _________.
#49763
A
leave
B
to leave
C
leaving
D
left