答案:should 考查虚拟语气。你必须记住的第一件事情是为了成功,你一定要乐观。在表示命令、要求、建议、义务等句中,从句用虚拟语气“should+动词原形”形式,should可以省略。这些词有order, suggestion, suggest, demand, proposal, propose, compulsory等等。
Ⅱ.语法填空,篇章训练
阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
The weather is getting hotter. Having taken exercise, we will become much __1__(thirsty). A cold drink may be just __2__ thing. But most of us are never concerned about what we drink. There are plenty of “energy drinks” on the market. Most of them have an attractive color or cool name. Something that looks cool may be harmful to our __3__(safe).
__4__ a careful check, we may find that most energy drinks have lots of caffeine(咖啡因) in them, __5__(typical) aimed at young people, students, busy people and sports players. Makers sometimes say __6__ drinks make us better at sports and can keep us awake.__7__ be careful not to drink too much.
Research by Australian scientists found caffeine makes our heart beat fast, which in most energy drinks is at least as strong as __8__ in a cup of coffee or tea and that many teenagers __9__(affect) by caffeine. There are possible health risks connected with energy drinks. Just one can of energy drink can make us nervous,__10__(cause) heart attacks. So why not stop drinking it right now?
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