— Has Sam finished his homework today?  — I have no idea. He ________ it this morning.  
#71940
A
did
B
was doing
C
has done
D
had done
推荐题目
To make your work easy to solve, you can______ with one other class member if you want. 
#83596
A
make up with
B
team up with
C
catch up with
D
put up with
She is usually __________ to be one of our best artists.
#74554
A
regarded
B
acknowledged
C
received
D
attempted
She was very ______ about her father’s sudden death.
#72430
A
cut down
B
cut in
C
cut up
D
cut off