Bài 2: Hoàn thành những câu sau đây bằng những liên từ cho sẵn.

since

although

while

unless

before
as though
when
as long as
because
in case
1.______________ Jim came home, he realized that someone had broken into his house

2.You’d better bring your raincoat________________ rain pour down.

3.They have been colleagues_______________ they graduated.

4.____________ Tim put more effort in his studying, he won’t catch up with his classmates.

5.My mother always reminds me to wash my hands_____________ I have meals.

6.We will go picnicking________________ the weather is fine.

7.James behaved______________ nothing had happened.

8.I can’t make it on Saturday_____________ I will be fully occupied.

9.When I got home my father was moving the lawn__________ my mother was watering the flowers beds.