If you sit in a chair _____a long time, your back may begin to hurt.
| A．at | B．in | C．on | D．for |
相关试题
阅读下面短文，根据汉语意思、音标、或首字母提示，在每个空格内填入一个适当的英语单词。_______ /hələu/! I am Lily. I come from England. Now I’m
____（九） years old. I have big eyes, a small mouth and small
_______（脚）. Look! The girl next
t_______ me is Lisa. We don’t look the
s_______, but we are good friends.
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