.Many people didn’t realize the importance of health _______they have fallen ill.
| A．until | B．while | C．when | D．after |
—is the population of your factory?
—It has apopulation because it's a new factory.
| A．How many; big | B．What; small |
| C．How big; small | D．What; big |
—How long?
—For two years.
| A．have you borrowed this book | B．you have borrowed this book |
| C．you have kept this book | D．have you kept this book |
—I saw Mr.Smith in the office at ten yesterday morning.
—That's impossible. Hean Enghish party with us then.
| A．has | B．was having |
| C．had | D．has had |
—I don't know where to go this summer vacation.
—Why notvisiting Suzhou? There are many places of interest there.
| A．consider | B．wonder |
| C．suggest | D．regard |
—Avatar（《阿凡达》）is an interesting film.
—Yes, my sisterit twice already.
| A．sees | B．saw |
| C．has seen | D．will see |