Cho a + b + c = 3. Cmr : \(a^2+b^2+c^2\ge3\)

Cho a+b\(\ge\)4. Cmr: \(a^2+b^2\ge8\)

Give the correct word form.

1. The company has over 300 stores..........(nation)

2. The price of ................has gone up again (electric)

3. Solar domestic heating systems are ..................to use (economy)

Put the verbs in the brackets into the correct tense, active or passive.

1. The robbbers ............(catch) as they ...........(leave) the bank.

2. Mr Taylor was angry with the newpaper agent because his Sunday newpaper ..................(not deliver)

3. After my operation, all my hair ............(fall out). It's growing back now though/

4. Our dustbins .................(empty) every Monday.

5. When I woke up this morning, the world looked like a wonderland. It...........(snow) all night.

6. I'd rather (go)............. out in the evening.

7. I'd rather (not go) ..............to the cinema yesterday because the film was so boring.

Rewrite the sentences

1. I can meet you if you arrive before eleven.

---->So.......................................................

Rewrite the sentences

1. How long have you lived here?

-------> How long ago........................

Rewrite the sentences

1. If I take the job I'll have to move to London.

----->Taking the job will.......................................

Rewrite the sentences

1, I thought that learning to drive would be difficult, but it isn't.

-----> Learning to drive is.......................................................

Rewrite the sentences

1. Nobody has heard of John since he went to live in America

----> John.............................................................................