(A) 根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式。
小题1:It was raining ____________ (heavy) at this time yesterday.
小题2:They looked at our pictures, but they didn’t show us ___________ (they).
小题3:_________ (silent) in the classroom makes everyone nervous.
小题4:My grandfather is in his _________ (sixty), but he is very crazy about pop music.
