Mrs Wang couldn’t fall asleep _______ her son arrived home.
A.until B.if C.because D.so
People found it convenient _______ in the city after the underground built.
A.travel B.travelling C.to travel D.travelled
Sally, _______ Jane’s homework.
A.not copy B.don’t copy C.doesn’t copy D.mustn’t copy
The lady was _______ ill that she couldn’t get out of the bed.
A.so B.too C.very D.enough
The furniture in the living room _______ him a lot of money.
A.paid B.bought C.spent D.cost
_______ important invention a computer is, for it has made our life easier than before.
A.What an B.What a C.What D.How
