1. (福建中考改编)We are making a big cake ______ it's Dad's birthday today.

A.because
B.until
C.once
D.so

1. A because 因为；until 直到……为止；once 一旦；so 所以。后半句是前半句的原因。

2. Mary has learned a lot about the history of Sichuan ______ she can be a tour guide.
答案讲解

A.even if
B.as soon as
C.so that
D.as if

2. C 句意：玛丽了解了很多关于四川的历史，这样她就能当导游了。even if 即使；as soon as 一……就……；so that 以便；as if 好像。由句意可知，了解四川的历史是为了当导游。后半句是前半句的目的。

二、根据汉语意思完成句子
1. 昨晚我太累了,所以我没有看足球赛。
Last night I was too tired, ______ I didn't watch the football match.
2. 我们没有去公园,因为下雨了。
We didn't go to the park ______ it was rainy.
3. 我们不被允许带手机进入校园,为的是我们能集中精力在我们的学业上。
We aren't allowed to bring mobile phones into school ______ ______ we can focus on our schoolwork.
4. 既然你身体不舒服,我们就不要去野餐了。
______ you aren't feeling well, let's not go for a picnic.
5. 我们坐公共汽车去的博物馆,因为它便宜。
We went to the museum by bus ______ it was cheap.

1. so 2. because 3. so that 4. Since 5. because