The country life _____ he had been used to ______ greatly last year.
| A．/; changed | B．which; has changed |
| C． that; changing | D．what; have changed |
They multiplied and filled the oceans and seas with oxygen, _____ encouraged the later development of early shellfish and all sorts of fish.
| A．that | B．where | C．when | D．which |
—— He promised to come to see you.
—— But he ＿＿＿＿＿. I’ve been all alone.
| A．didn’t | B．wouldn’t | C．hasn’t | D．won’t |
This is the first time that Iit.
| A．see | B．saw | C．had seen | D．have seen |
The ship was _____ in a storm off Jamaica.
| A．drowned | B．sunk | C．wrecked | D．submitted |
We hurried to the station, _________ the train was gone.
| A．find | B．finding | C．found | D．only to find |