If he doesn't work harder, he'll lose his job. I have never been here before

Bài 1'
1.If he doesn't work harder,he'll lose his job
Unless
2.I have never been here before
It is the first
3.You have read this novel,haven't you?
Have you
4.It was raining hard,so we had to cancel the game
We had to
5.It's very wonderful to spend the weekend in the countryside
Spending 
6.Can you use this computer?
You can
7.I can't remember the answers to these questions
I wish
8.''Must go to Ha Noi tomorrow''said Nam
Nam said
9.Nga spends 4 hours a day practicing English with her friends
It takes
10.We take our umbrellas because it is raining heavily
It is
11.You/mind/if I/borrow/car/?
12.Tom/always/going/home/late/so/mother/be/angry