Our manager said ________ couldn’t finish his own task on time must do extra work on Saturday.[ ]

Special attention should be _____ to air pollution wherever the factory will be built.

The science of computer,____ rapid progress has been made, is the most important of all.

What’s the final result,young fellow?—Well,it was _______ what I had expected.

The police are ______ to conclude that thecause of fire was a cigarette end.