根据所给的句子以及汉语释义，用所学过的单词或短语完成句子，每空一词。

1.________ ________ ________(直到现在)，we have finished Book 4.

2.We are not allowed to ________ ________(参考)our notes in the exam.

3.His laziness can perfectly ________ ________(为…做出解释) his failure.

4.No one knows exactly how the fire ________ ________（爆发）last night.

5.Women are still being ________ ________ ________（看不起）in some areas.

6. It was hard for him to ________ ________ (挑出)his teacher in the crowd.

7.Keep on working like this and you will succeed ________ ________(迟早).

8. ________ ________ ________ I know (据我所知)，he is from America.

9.They ________ ________ ________(屏住呼吸) and watched the cat closely.

10.With so many animals ________ ________(灭绝)，the environment is becoming worse and worse.

据我所知，这种新型的环保塑料袋能极大地减少白色污染(the White Pollution)。

据我所知，距离汽车站不到一百米就有一个银行。(as far as；within)

据我所知， 他有做生意的天赋。(as far as; have a gift for)

Directions: Translate the following sentences into English, using the words given in the brackets.

1. 校园内禁止吸烟。（allow）

2. 我建议你星期一早上早点起床，因为总是会塞车。(suggest)

3. 国际问题应该以和平方式而不是暴力方式来解决。(rather than)

4. 多亏父母的理解与支持，他终于实现了当一名宇航员的梦想。（Thanks to）

5. 应该鼓励学生多参加户外运动，缺乏体育锻炼可能会对他们的成长造成许多负面的影响。（lack）