—What do you think has caused his heart attack? —It is ______.
#1316
A
because of his overweight
B
due to his being overweight
C
his being overweight
D
he is so overweight
推荐题目
---It looks heavy. Can I give you a hand?---___________. 
#2388
A
No, thanks
B
Yes, my pleasure
C
No, never mind
D
Yes, I do
-- ____?                --Yes, it is.
#21813
A
Is Bob a boy?
B
Are you ten?
C
Is your pen blue?
D
Is she here?
—Can I use your laptop for a while?—      ; anyhow I am not using it now.
#2200
A
That's OK
B
By all means
C
It doesn't matter
D
Use it