--- Shall we call on Frank tonight?---We’d better not. He is said ________ a lecture.
#97302
A
preparing
B
to be preparing
C
to have prepared
D
having prepared
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He is ill. He has kept_____.
#97529
A
coughing all along
B
to cough at night
C
cough since yesterday
D
being coughed day and night
The classroom wants __________.
#91728
A
clean
B
cleaned
C
to clean
D
cleaning