People’s working efficiency usually decreases more or less when the temperature _________ 35℃ or even higher.

two brothers, Bill is ______ younger one,and he is a quiet boy, ______ that most adults like very much

Nancy, are you sure you can do it by yourself — .I did it before.

e so eager to join the school basketballteam, why not try out for it

Did you water the flowers yourself–No, I got them ______.