Ⅰ.单句语法填空
1．As is known to all, the sun ________ (rise) in the east and ________ (set) in the west day after day.
rises; sets [句意：众所周知，太阳东升西落，日复一日。表示客观事实、客观规律要用一般现在时。]
2．Tom ________ (cry) again and again and we can't bear him anymore.
is crying [句意：Tom一直在哭泣，我们再也忍受不了他了。进行时与某些副词连用可表示说话人的一种强烈的感情，如厌恶、欣赏、钦佩等。]
3．It has been three years since we ________ (come) here.
came [句意：自从我们来到这儿已经三年了。since＋含有一般过去时的句子/表过去的时间点，主句或句子常用现在完成时。]
4．By the time he was nine, Tom ________ (master) a foreign language.
had mastered [句意：到九岁时，汤姆已经精通了一门外语。by the time表示“到……的时候”，引导时间状语从句时，如果从句用一般过去时，主句要用过去完成时。]
5．It is the first time that I ________ (go) abroad.
have gone [句意：这是我第一次出国。“That/This/It is the first/second/third ...time (that) ...”句型中，从句常用现在完成时。]
6．More than one customer ________ (express) their dissatisfaction with the service of the restaurant so far.
has expressed [句意：到目前为止，不止一个顾客表达了他们对那家餐厅服务的不满。根据时间状语“so far”可知，句子应用现在完成时；“more than one ＋单数名词”作主语时，谓语动词用单数形式。]
7．Put your finger into the water. If it ________ (feel) too hot, pour some cold water in it.
feels [句意：把你的手指放进水里。如果水太热，就往里面倒一些凉水。感官动词feel不使用被动语态，用主动语态表示被动意义。此处描述一般事实，故句子用一般现在时。]
