20．--- With white sands and a row of cafes overlooking the blue sea, the small town looks beautiful.

　　 --- Exactly! If only I 　　　　here nearby.

　　　 A．worked　　　　　　　 B．had been working C．have worked　　　　 D．am working

19．　　　 more and more forests destroyed, many animals are facing the danger of dying out.

　　　 A．Because 　　　　　　 B．As　　　　　　　　　　　 C．With　　　　　　　　　 D．Since

18．--- The weather is changeable here. Please take more clothes.

　 --- 　　　　.

　　　 A．It’s a pleasure　　　　　　　　　　　　　　　　　　　 B．Well, it just depends

　　　 C．Take your time　　　　　　　　　　　　　　　　　　 D．OK, just in case

17．It is not 　　　　you have said but what you have done 　　　　made us very disappointed.

　　　 A．that; what　　　　　　 B．what; what　　　　　 C．what; that　　　　　　 D．that; that

16．Many new workers 　　　trained and in half a year they 　　　　to build a new railway.

　　　 A．are being; will be sent　　　　　　　　　　　　　 B．are; will be sending

　　　 C．are; will send　　　　　　　　　　　　　　　　　　　 D．will be; will be sent