_____for the fact that he was working abroad, he would willingly have helped with the project.
A.If it had been
B.If it hadn't been
C.Had it been
D.Hadn't it been

Who/what counts the number of hours per week that students spend learning?

A.Teacher
B.Parents
C.Virtual reality
D.computers

What can't the software do?
A.Find out the best activities for the students
B.Design materials for the students
C.Identify weaknesses of the students
D.Monitor the time the students learn

______(46)
A.consisting of
B.consisting
C.consist of
D.in concluding of

_______(48)
A.weren't
B.can't
C.are not
D.couldn't

______(49)
A.who is
B.is
C.which has
D.which is

A.teacher
B.children
C.charity
D.orchestra

I have lost my umbrella. I__________it on the bus.

A.should have left
B.can leave
C.could leave
D.must have left

“ Don’t forget to give book to Tom” she said
A.She reminded me not to forget to give book back to Tom.
B.She reminded me to remember to give book back to Tom.
C.She reminded me remember to give book back to Tom.
D.She reminded me to give book back to Tom.

Tom said that__________.
A.An has bought a new car
B.An had bought a new car
C.An will buy a new car
D.An buys a new car