We should take good care of the elderly, as they are ______ to the sudden change of weather.

Shall we go on visitto Shanghai after the exam—No. I have to practice playing piano.

Thedaysaregone________physicalstrengthwasallyouneededtomakealiving [ ]

must have learnt the good news of our teamwinning the football match, _____ you — Yes. I _____ it up when having supperin the canteen.

Young children should be ______to be honest and happy.