---- Why does the river smell terrible?
---- Because large quantities of water______．
| A．have been polluted | B．has polluted | C．has been polluted | D．have polluted |
–I want to make a kite to fly.
-- __________ You can easily buy one on the market.
| A．Why not? | B．Good idea. | C．Why bother? | D．No way! |
Look at the trouble I am in! If only I __________ your advice.
| A．followed | B．would follow | C．had followed | D．should follow |
Chuck Swindoll once said, “Life is 10% _____ happens to us and 90% _____we respond to it.”
| A．who; why | B．what; how | C．which; when | D．that; that |
He ________ to paint the whole house early this morning, but has only finished the front part of it so far.
| A．set about | B．set off | C．set up | D．set out |
A good idea __________ to me, and I quickly picked up the phone to tell Jack about it.
| A．struck | B．appeared | C．happened | D．occurred |