Having worked for a whole week，I decided to ________the rest of my assignment and go to the seaside for relaxation.
| A．set out | B．set off | C．set up | D．set aside |
---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?
---- Really? No _____ I haven’t seen him for a long time.
| A．have; doubt | B．has; wonder |
| C．have; wonder | D．has; choice |
—I drove to Zhuhai for the air show last week..
—Is that ________ you had a few days off ?
| A．where | B．when | C．what | D．why |
What is even more important is______ the earth cooled down, water began to appear on its surface.
| A．that | B．that as | C．which | D．which as |
His idea was such a good one ______ we all agreed to use it.
| A．as | B．that | C．so | D．but |
Although the causes of cancer_____, we do not yet have any practical way to prevent it.
| A．are being uncovered | B．have been uncovering |
| C．are uncovering | D．have uncovered |