We must do everything we can waste water from running into rivers.
#48694
A
keep
B
kept
C
to keep
D
keeping
推荐题目
Mary is looking forward to _____ from me , please remember _______ this letter on your way to school .
#49339
A
hear ; send
B
hearing ; sending
C
hearing ; to send
D
hear ; sending
David enjoys _________ basketball on the playground after school every day.
#51223
A
play
B
played
C
playing
D
to play
Your son has kept _________ for two hours. You’d better ask him to have a rest.
#51156
A
study
B
studied
C
to study
D
studying
She is going for vacation when she finishes ____________ her new book.
#49114
A
to write
B
writes
C
writing
D
write