The companies are working together to create _____ they hope will be the best means of transport in the 21st century.
| A．which | B．that | C．what | D．who |
If you have a job, ________ yourself to it and finally you’ll succeed.
| A．do devote | B．don’t devote | C．devoting | D．not devoting |
_________, so he is afraid of dogs .
| A．Having been bitten twice | B．Bitten twice |
| C．After he has been bitten twice | D．He has been bitten twice |
Asiswidelyacknowledged,playingoutsidehelpschildrenlearnthroughcuriosity, which , _ __, promotescreativity.
| A．inbrief | B．inturn | C．inconclusion | D．inreturn |
--Life____beveryhardforpeoplelivinginthenorthofCanadaasitisvery
coldthereinwinter.
—Yes,theweatherthere_____beaslowas60℃belowzero.
| A．must;can | B．shall;must | C．will;should | D．hasto;can |
— Whichofthetwinbrothersiseasiertogetonwith?
—_____youngerone.Heis____mosthumorousman.
| A．A;a | B．A;the | C．The;a | D．The;/ |