-----Why? I didn’t get you on the phone.
-----We ________ football on the playground when you phoned.
| A．must be playing | B．must play |
| C．must have played | D．must have been playing |
---Hi, Brown! Are you going to have an outing?
---_____.
| A．I can’t say | B．Yes, I will do |
| C．It’s fun to do so | D．That all depends |
--Cliff, I lost your ball at school. I suppose I should pay for it.
--- Oh. _____. It was just as old ball anyway.
| A．Take it easy | B．By no means | C．You got it | D．Forget it . |
_____is mentioned above, the number of the studentsin seniorschools is increasing.
| A．Which | B．As | C．That | D．It |
_____ is known to everybody, the moon travels round the earthonce every month.
| A．It | B．As | C．That | D．What |
._____ has been announced, we shall have our final exams nextmonth.
| A．That | B．As | C．It | D．What |