His technique has developed to the point _____ he can help kill the latest computer virus going round the city.
A. that B. which C. when D. where
The place _____ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.
A. to which; where B. at which; where
C. by which; in which D. for which; which
It was an agreement, ______ could not be changed.
A. of which details B. whose the details
C. the details of which D. all whose details.
The shopkeeper did not want to sell for ______ he thought was not enough.
A. what B. which C. where D. how.
Helen was much kinder to her youngest child than she was to the others, _____, of course, made the others unhappy.
A. which B. that C. what D. who
The reason why he was late was _______ he had take a wrong bus.
A. because B. whether C. when D. that
