◆Choose the best answer to complete each sentence.1._______ open your books to page 80.
A. To please
B. Please
C. Pleasing
查看答案
Don't forget_______ your teeth before you go to bed.
A. brush
B. to brush
C. brushing
______ a jacket. It's cold outside.
A. Taken
B. Took
C. Take
All guests must_______ at the front desk.
A. signing in
B. sign in
C. signed in
_______ leave! We haven't finished yet.
A. Don't
B. Not
C. No