There (be)............. no guests at all since I left.
A.has been
B.have been
C.were
D.are

In a few minutes’time, When the clock (strike)............... six, I (wait)............... here for three hours
A.strikes - will have been waiting
B.striked - will have been waiting
C.strikes - have been waiting
D.strikes - will wait

She (sleep)................ for 10 hours! You must wake her
A.has slept
B.slept
C.had slept
D.has been sleeping

It is a top secret. You _______ tell anyone about it.
A.mustn't
B.needn't
C.mightn't
D.won't

She is still not good at Math. ______, she cannot be the best student in her class.
A.However
B.Therefore
C.Because
D.But

Her friend tells lies to her, ______ she still likes and trusts him.

A.however
B.so
C.although
D.but

I’ve never eaten this food before.
A.It’s the first time I’ve eaten this food.
B.It’s the tastiest food I’ve ever eaten.
C.I’ve never eaten such a good food before.
D.The food is so good that I’ve never eaten before.

My wife didn’t leave the car keys, so I couldn’t pick her up at the station.
A.If my wife had leave the car keys, I could pick her up at the station.
B.If my wife had left the car keys, I could pick her up at the station.
C.If my wife had left the car keys, I could have picked her up at the station.
D.If my wife had left the car keys, I could picked her up at the station.

Peter can answer the questions more intelligent than I can.
A.peter
B.answer
C.intelligent
D.can

She never go home before she has finished her work.
A.never
B.go
C.before
D.has finished