He ______ busy yesterday, or he ______ you with your experiment.
#101281
A
was; had helped
B
was, would have helped
C
had been; would have
D
were; would have helped
推荐题目
Mike didn’t notice Alice entering his room. He ____ a phone call.
#104835
A
answered
B
has answered
C
was answering
D
is answering
When you don’t know a word, you can _________ in the dictionary. 
#99231
A
look it up
B
set it up
C
give it up
D
pick it up