British scientists have produced _____ they believe is the world’s smallest Christmas card．
| A．which | B．who | C．that | D．what |
Order came that all the army supply ______ to the front before daybreak.
| A．be sent | B．should send | C．were sent | D．should have sent |
________, I'm glad you made that mistake, for it will serve as a warning to you.
| A．In case | B．In a way | C．In return | D．In relief |
—You've got your flat furnished, haven't you?
—Yes. Isome used furniture at the Sunday Market and it was a real bargain.
| A．will buy | B．have bought | C．had bought | D．bought |
The zoo keepers is worried because the number of visitors __smaller
and smaller.
| A．become | B．became | C．is becoming | D．have become |
With films like Avatar proving__________ in cinemas, many technology experts believe 3D is now set to take over the home market,
| A．difficult | B．easy | C．common | D．popular |