B.I.1a invited

2c family

II.1b in

2a to follow

3c sitting

4c standing

5c when the phone rang

6d he was pleased

C.I.1 Viet lives in a bed-sit in a suburb of HaNoi

2 there are three people share the bathroom with Viet

3 there is a closet on the right side of the room

4 the cooker is on the right hand side

II.1 true

2 false

3 false

4 true

D.I.1 it's very important to keep the environment clean

2 the time machine will be shown to the public when they finish it

3 when did you use the car?

4 we have lived here for fifteen years

II.1 Mr Nam is arriving in Hue tonight

2 they are going back to england in two moths

3 It is not difficult to translate this sentence into English

4 Would you mind lending me your dictionary?