bông , vải , xốp , bê tông , gỗ......

đều giao động khi phát ra âm thanh

1.đều đi nhanh (có vận tốc lớn)

2.đều là vật ; chúng đều để lại dấu vết khi đi qua ; đều có lực ma sát

1.long started playing soccer for two hours ago

2.you'd better not eat too much meat

3.he drives taxi carelessly

4.how much is this portable computer?

5.michel owen plays football skillfully

6.my father prefers cycling to riding motorbike

1.is coming

2.doesn't go

3.to buy

4.does your father go

5.aren't watching ; are

6.listens ; watches

7.understand ; does this word mean

8.are going to travel

9.don't drive ; is

1.for

2.to

3.in

4.for

5.with

6.to ; in

7.at ; on

8.through

9.for

10.to ; on

1.that film is more boring than this one

2.the weather was so bad that we couldn't go out

3.it was such an interesting story that i watched twice

4.how old will you be on your next birthday?

mình sửa lại

1.in->on

1. in->at; I'm->I ; goes swim->go swimming

2.much->many ; do have you got->have you got

3.doesn't have->hasn't ; some->any ; workbook->workbooks

4.the program started->did the program start

5.no->don't ; you's saiing->you're saying

6.have->has ; call->called

7.loving->love ; food english->english food ; its->it is

minh nhầm sửa lại nha

2.C