—Where is Mother?—She is in the kitchen. She ______the housework all morning.
#99274
A
does
B
has been doing
C
has done
D
was doing
推荐题目
The pair of leather boots that I bought last weekend_______ comfortably.
#103429
A
wears
B
is worn
C
was worn
D
was wearing
We must give up the project now. We _____ money. 
#101247
A
are running out of
B
will run out of
C
had run out of
D
have run out of
The car ________ on the way , consequently ________ . 
#103121
A
was stuck in the mud ; which led to Jack to miss the train
B
was caught in the mud ; and led Jack’s missing the train
C
was held up in the traffic ; leading to Jack’s missing the train
D
was held back in the traffic ; it led to Jack’s missing the train