Time should be made full use of _________ ourselves.
| A．improving | B．to improve | C．for improving | D．improve |
He was not an actor, who often appeared on stage, _____ a writer, writing stories.
| A．but | B．and | C．then | D．so |
I don't know whether to stay in teaching or _____ another job.
| A．trying getting | B．to try to get | C．trying to get | D．try get |
He just does what he pleases and never _____ about anyone else.
| A．think | B．thinks | C．thinking | D．thought |
Few pleasures can equal ______ of a cool drink on a hot day.
| A．some | B．any | C．that | D．those |
He transplanted the little tree to the garden _____ it was the best time for it.
| A．where | B．when | C．that | D．until |