I am so tired，for I ________ English for 2 hours.
#99761
A
is studying
B
have been studying
C
was studying
D
had been studying
推荐题目
---Can I help you, sir? ---Yes. I bought this radio here yesterday, but it _____.
#104442
A
didn't work
B
wouldn't work
C
can't work
D
doesn't work
I ______ all day and I haven’t a penny left.
#103821
A
had shopped
B
am shopping
C
have shopped
D
have been shopping
—What you said at the party hurt me deeply.— Sorry, but _______
#99038
A
I didn’t mean it
B
I didn’t mean to
C
I don’t mean it
D
I don’t mean to
— Where is Mr. Wang?— He is not here. He must _______ the students’ papers in the office.
#101138
A
correct
B
have corrected
C
be correcting
D
corrects
Some research workers completely all those facts as though they never existed.
#101176
A
refuse
B
miss
C
leave
D
ignore