Hewouldhavegivenyoumorehelp,ifhe________sobusy.
A、havenotbeenB
本题考察与过去事实相反的虚拟语气。
Thebookfairhasreceivedapositive________fromreaders.
Theprofessoraskedaquestion,andDavid________agoodanswer.
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
Thecentraltheatrehasaseating________ofmorethan3,000people.
Heblamedhispoorperformance_____jetlag.
