— Do you mind _______ the window? It’ s so hot today.  —Of course not. 
#51214
A
open
B
to open
C
opened
D
opening
推荐题目
My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
#50647
A
ride, driving 
B
ride, drive
C
riding, drive
D
riding, driving
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
My sister is good at ________.
#49305
A
sing
B
sings
C
singing
D
to sing