3. They ____________trees in the park last summer
A. have planted B. plant C. planted
4. He __________ this hobby five years ago after a trip to the US where he saw some carved eggshells in an art gallery.
A. start B. started C. starts
5. Mai: “ Hi doctor. I keep sneezing and coughing, and my nose is runny.”
    Doctor: I think you have __________
            A. an allergy B.flu C. sunburn
6. I love cooking, _________ my sister doesn’t.
A. because B. so C. but
7. Don’t __________ spots! It makes acne more serious .
             A. avoid B. pop C. use
8. ________you( watch) ___________”Tom and Jerry” on TV yesterday?
           A. Do / watch B. Have / watched C. Did / wat