用括号内所给词的适当形式填空 1. I think teenagers should be _____ (allow) to go out with their friends every night. 2. I don't think twelve-year-olcl studcnts should get their ears _____ (pierce). 3. We need time_____(do) our homework. 4. Tom watched TV instead of_____ (listen) to the radio. 5. The other day I _____ (meet) Lucy in the library. 6. We have nothing against _____ (run). 7. If you work hard, you will _____(success). 8. We are _____ (fourteen-year-old).