Thistest________anumberofmultiplechoicequestions.
A、composesofAbeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
Iknowitisn’timportantbutIcan’thelp________aboutit.
________(fail)severaltimes,theyneedsomeencouragement.
Wooddoesnotconductelectricity;________.
Ipreferthisdiagram________thatone.
