. Teachers recommend parents ___ their children under 12 to ride bicycles to school for safety.
A. not allow B. do not allow C. couldn’t allow D. mustn’t allow
His glasses, ________ he was like a blind man, fell to the ground and broke.
A. which B. from which C. with which D. without which
In the office I never seem to have time until after 5:30 p.m.,____ many people have gone home.
A. whose time B. that C. on which D. by which time
Great changes have taken place in that school. It is no longer ___ it was 20 years ago, ___ it was so poorly equipped.
A. what, when B. that, which C. what, which D. which, that
He was educated at a local grammar school, ___ he went on to Cambridge.
A. from which B. after that C. after which D. from this
She ___ for the professor who was ill.
A. substituted B. changed C. shifted D. replaced
