______ open your books to page 80.
A. To please
B. Please
C. Pleasing
D. Pleased
查看答案
Don’t forget ______ your teeth before you go to bed.
A. brush
B. to brush
C. brushing
D. brushed
______ a jacket. It’s cold outside.
A. Taken
B. Took
C. Take
D. Not take
All guests must ______ at the front desk.
A. signing in
B. sign in
C. signed in
D. be signing in
______ leave! We haven’t finished yet.
A. Don’t
B. Not
C. No
Didn’t