Since Tom ___ downloaded a virus into his computer, he can not open the file now．
A.readily B.horribly C.accidentally D.irregularly
Alan is a careful driver, but he drives ______ of my friends.
A.more carefully B.the most carefully C.less carefully D.the least carefully
I'm certain David's told you his business troubles.____，it's no secret that he owes a lot of money to the bank.
A.However B.Anyway
C.Therefore D.Though
I wish you’d do _____ talking and some more work. Thus things will become better.
A.a bit less B.any less
C.much more D.a little more
Letterboxes are much more __________ in the UK than in the US, where most people have a mailbox instead.
A.common B.normal C.ordinary D.usual
Progress so far has been very good. , we are sure that the project will be
completed on time.
A.However B.Otherwise C.Therefore D.Besides
