He tried his best to solve the problem, ______ difficult it was.
A. however B. no matter C. whatever D. although
–David, it’s Frank. Do you have a few minutes? I need to see you.
-- _______. But I hope “a few minutes” doesn’t turn into an hour.
A. I’m afraid not B. It doesn’t matter C. I don’t think so D. I guess so
The novel is said _______ the month before.
A. to publish B. to be published C. publish D. to have been published
I kept looking at the man, wondering _______.
A. whether I have seen him before B. whether I had seen him before
C. that I had seen him before D. when I saw him before
I got caught in the rain and my suit _______.
A. has ruined B. had ruined C. has been ruined D. had been ruined
Please ______ the address before you forget it.
A. put down B. put up C. put on D. put away
