Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.
| A．treated | B．to be treated |
| C．being treated | D．be treated |
We _____to Sydney next Monday. What about having a party this weekend?
| A．have flown | B．flew | C．are flying | D．had flown |
–My room gets very cold at night.
--__________.
| A．So is mine. | B．So mine is | C．So does mine | D．So mine does |
My sister was angry ______ what he said.
| A．as | B．because | C．because of | D．since |
We all had a good opinion of the important part he ________ in this match．
| A．played | B．did | C．had | D．took |
It is the first time that we ________ a film in the cinema together as a family．
| A．see | B．had seen | C．saw | D．have seen |