--$ 500 ,but that is my last offer.
--OK, it is a __________.
| A．cost | B．price | C．reward | D．deal |
—Do you think it’s going to rain over the weekend?
—______. We’re planning to go on a picnic.
| A．I think so | B．I believe not | C．I don’t think so | D．I hope not |
So although Fleming discovered penicillin, it was over a decade ___________someone else turned penicillin into the great drug of the 20th century.
| A．when | B．that | C．before | D．unless |
Hardly __________ the Shanghai Expo _________ we realized we forgot our ID cards in the room.
| A．we had got to ; that | B．we got to ; when |
| C．had we got to ; when | D．had we got to ;than |
________in the heart of Toronto is the Canadian National Tower , which is often called the CN Tower for short.
| A．Locating | B．Located | C．Having been located | D．Having located |
. Emergency line operators must always ________calm and make sure that they get all the information they need to send help.
| A．grow | B．appear | C．become | D．stay |