Tham khảo tài liệu 'grammar in use new part 51', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Key to Exercises 2-10 She used to have lots of friends but she doesn t know many people these days. She used to be very lazy but she works very hard these days. She didn t use to like cheese but she eats lots of cheese now. She used to be a hotel receptionist but she works in a bookshop now. She used to play the piano but she hasn t played the piano for years. She never used to read newspapers but she reads a newspaper every day now. She didn t use to drink tea but she likes it now. She used to have a dog but it died two years ago. She used to go to a lot of parties but she hasn t been to a party for ages. UNIT 19 2 How long are you going for 3 When are you leaving 4 Are you going alone 5 Are you travelling by car 6 Where are you staying 2 I m working late. I I m working till 9 o clock. 3 I m going to the theatre. 4 I m meeting Julia. Example answers 2 I m working tomorrow morning. 3 I m not doing anything tomorrow evening. 4 I m playing football next Sunday. 5 I m going to a party this evening. 3 re having are having 4 finishes 5 m not going am not going . m staying I am staying 6 Are you doing 7 re going I are going . starts 8 m leaving am leaving 9 re meeting are meeting 10 does this train get 11 m going I am going . Are you coming 12 does it end 13 m not using am not using 14 s coming is coming . s travelling is travelling . arrives UNIT 20 2 What are you going to wear 3 Where are you going to put it 4 Who are you going to invite 2 I m going to take it back. 3 I m not going to accept it. 4 I m going to phone her tonight. 5 I m going to complain. 2 He s going to be late. 3 The boat is going to sink. 4 They re going to run out of petrol. 2 was going to buy 3 were going to play 4 was going to phone 5 was going to give up 6 were going to have UNIT 21 2 I ll turn 1 11 switch I ll put 3 I ll go 4 I ll do 5 I ll show I ll teach 6 I ll have 7 I ll send 8 I ll give I ll bring 9 I ll stay I ll wait 2 I ll go to bed.