1. The group of doctors has spent 8 months_____________ the side - effects of this new vaccine. A. having examined B. to examine C. examining D. to have examined 2. A: I'm trying to move this cupboard, but it's very heavy. B: Well, _____________ you, then. A. I help B. I'll help C. I’ll be helping D. I'm going to help 3. Hoa told me that _____________ our new teacher of English. A. she wants to become B. she wanted to become C. she will become D. she wanted becoming 4. _____________ in science and technology have changed people's life dramatically. A. developing B. developed C. development D. developments 5. Lan asked me if I_____________ that exciting baseball match on TV the previous day. A. watched B. have watched C. was watching D. had watched 6. Last week Justin said, "I’ll do it tomorrow". He said he would do it _____________. A. the following day B. the previous day C. tomorrow D. yesterday 7. They said that they _____________ a special TV which could perform two different channels at the same time. A. had bought B. are going to buy C. have bought D. will buy 8. Don't worry! I _____________ you to solve the problem. A. help B. helped C. will help D. helping 9. Jason asked Linda where she _____________ the month before. A. stayed B. had stayed C. have stayed D. have been staying 10. When I last saw Carrie, she told me she _____________ but now she's changed her mind. A. thought B. is thinking C. was thinking D. has been thinking