41．You'd better speak________(大声地)because they can't hear you clearly．
42．I am very_________(瞌睡)because I stayed up late last night．
43．It was so cold yesterday．The_________(温度)dropped to-18℃．
44．In summer，_________(阵雨)come suddenly．
45．Most children like snowball__________(打仗)on snowy days．
46．The weather will be__________(主要地)dry and hot tomorrow．
47. —Why was he crying in the yard?
—An apple from the tree and hit him on the head.
48. —Visiting the zoo is one of my happiest .
—Yes. I will remember it forever.
49. —I looked for you ，but I didn't find you.
—Sorry. I was next door because Mrs Li asked me for help.
50. —I hate days. I feel uncomfortable in a raincoat.
—Oh, but don't you think it is romantic to walk in such weather?