_____yourtimelyadvice,Iwouldneverhaveknownhowtogoaboutthework.
A、UnlessB
暂无解析
If only I _____ play the guitar as well as you!
It is imperative that students _____ their term papers on time.
Nancywassurprisedthattheyhave（），Theyseemedtobeahappycouple.
Modern（）perhaps causes more problems than it solves.
The back garden of our house contains a lawn ，（） very pleasant to sit on in summer.
