Hoàn thành những câu sau đây bằng những liên từ cho sẵn

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
becausein 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.
10._____________ I don’t get on well with Mary, I really admire her inteligence and beauty.