备考跟踪训练4
一、单项选择。
1. Look！Those children are having__A__ great time in the park.
A．a B．an C．the D．/
2. Tom，don't spend too much time__D__ computer games.
A．as B．at C．for D．on
3．—It's__C__ outside.
—Yeah！Let's go out and make a snowman.
A．cloudy B．rainy C．snowy D．windy
