помогите пожалуйста 1 (а.b) и 2

1a

6. for

B

2. I have been in this class for six months/since last autumn.

3. We have been friends for 9 years/since 2009.

4. I have known Paul Carpenter for a year/since last year.

2. Lift-elevator

Rubbish-garbage

Bin-garbage can

Football-soccer

Biscuits-cookies

Sweets-candies

Underground-subway