________it with my own eyes, I would have never believed it.
A.Unless I had not seen
B.Provided I had seen
C.If I had seem
D.Had I not seen

Have I told you about _________ the government is dealing?
A.the problem with which
B.the problem with that
C.the problem
D.the problem that

Poor management brought the company to _________of collapse.
A.the edge
B.the foot
C.the brink
D.the ring

Maria Sharapova became the first Russian ________a Wimbledon singles title.
A.which won
B.that was winning
C.who wins
D.to win

Not much happened yet, _________?
A.did they
B.didn’t it
C.did it
D.didn’t they

“No, I didn’t come to see her that night!”
A.He denied having come to see her that night.
B.He denied to have come to see her that night.
C.He denied not having come to see her that night.
D.He refused to have come to see her that night.

Neither the director nor any members of the staff is working overtime today.
A.Neither
B.nor any
C.is
D.overtime

A big wedding requires a lot of preparation, such as sending invitations, hiring costumes and choose dishes.
A.requires
B.preparation
C.sending invitations
D.and choose

When attempt to explain children’s food preferences, researchers are faced with contradictions.
A.attempt
B.to explain
C.children’s
D.with

People live in big cities often have trouble making friends.
A.People live
B.big cities
C.trouble
D.making friends