1.-----Thereis_____Mr.TomSmithonthephone.
-----I'mbusy.PleasetellhimI'llcallhimbackin____moment.
第一个空为什么填a不填the?
2.DoyouknowwhattimeRichard'splane_____tomorrow?I'dliketoseehimoffattheairport.
答案是takesoff,为什么是一般现在时?我填istakingoff现在进行时表将来为什么不行?