Problems may （）

单项选择题The foreign guests said that they were very happy （）the great changes which had taken place in the village.

A.to
B.for
C.about
D.by

单项选择题Having a good command of English is（）an easy thing.

A.by all means
B.by any means
C.by every means
D.by no means

单项选择题（）your help, I could not have finished my work so early.

A.with
B.by
C.for
D.without

单项选择题The manager of our company asked me if was possible for me to（）the marketing plan within a week.

A.set out
B.work out
C.make out
D.put out

单项选择题Not being able to speak English,they felt rather（）in the USA.

A.strange
B.puzzled
C.alone
D.lonely