He was hit by a falling tree last night and killed ___________.
---John has made great progress in the last two months. --- _________, and _________.
The house, ____________is blue, will be used as a library.
Petroleum(石油), along with fuel gas, ________ in price. Thus a larger amount of money __________ spent on transportation.
---You are late again! We _________you could attend the assembly on time. ---Sorry, I __________to my office to get my papers.
It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.