1、A：Mum_is cooking__,dad.
B：L_know___.L_have smelt__it.Let me_help__her.(smell,help,cook,know)
2、A：Where_have____you_been_____?
B：To Paris.
A：What_do____you__think____of Paris?B：Wonderful.
A：You're lucky.And now we_will think____about_travelling__to Bangkok.Would you like__join_us?B：Ok.(be,think,travel,join)
3、A：_Playing/To play____rugby is exciting.Why not_join_____us?
B：Great!(play,join)
1、you don't need_to worry______(worry)about my study.you needn't(help)me.
2、l'll be able __to manage____(manage)__to do______(do) everything by myself.
3、Thin wires are connected to thick ones that are _buried_____(bury)under the street.We know that thick wires _are connected______(connect) to a power station finally.
4、Do_eye-exercises at once,everybody.Do you know that _doing__eye-exercises is good for you?(do)
5、They were so tired that they_couldn't____(can,not)__go______(go) on walking.