5．16．Mom is not busy today． 17．Mom asks Peter to make the fruit salad． 18．Suzy dislikes chicken sandwiches． 19．Mom asks Bill to clean the bedroom． 20．Jack knows how he can use the cleaner．
3．根据所给音标和句意选择恰当的单词． 21．-How often do you do sports？-I do sports______/twa?s/a day． A．twice B．twins C．tooth D．tries 22．What a ______/fa?n/day to climb the mountain with friends! A．fun B．fine C．find D．funny 23．Go down this street and turn ______/left/．You will see a library in front of you． A．light B．left C．let D．lift 24．My ______/'fe?v?r?t/snack is potato chips． A．favorite B．free C．foreign D．future 25．At that time，the computer was a great ______/?n′ven?n/． A．invent B．invitation C．invention D．inventor．
4．21．How old are Jim and Tim？略 A．Fifteen B．Ten C．I don't know． 22．Who is older，Tim or Jim？略 A．Tim B．Jim C．They are at the same age． 23．Jim and Tim are略． A．twin sisters B．friends C．brothers 24．Do they like their mother？略 A．Yes，they do． B．No，they don't． C．Sometimes． 25．Are they both good at music？略 A．Yes，they are． B．No，Tim isn't． C．No，Jim isn't．
