【题目】Be _______ — you can't expect me to finish all this work in so little time.
A.reasonable
B.confident
C.creative
D.grateful

— Sorry, sir. They are fully booked.

A. possibleB. availableC. usefulD. convenient

【题目】A number of high buildings have arisen ________there was nothing a year ago but ruins.
A.when
B.where
C.before
D.until

【题目】If we _______ adequate preparations, the conference wouldn't have been so successful.
A.haven't made
B.wouldn't make
C.didn't make
D.hadn't made

A. thisB. whichC. oneD. it

【题目】Being able to afford _______ drink would be ______ comfort in those tough times.
A.the; the
B.a; a
C.a; 不填
D.不填；a

【题目】After Jack had sent some e-mails, he _______ working on his project.
A.had started
B.has started
C.started
D.starts

【题目】He smiled politely ______ Mary apologized for her drunken friends.
A.as
B.if
C.unless
D.though