the zoologists tried to prove was that the photo of the South China Tiger had been staged or technologically dealt with.
Our factory has been developing rapidly this year. This year’s production is five times _____ it was ten years ago.
We should produce less things from raw materials, _____ is growing smaller and smaller.
As fuel prices rose, bus companies raised their fares and _____.
Friendships between girls are usually ________ shared feelings and support, but friendships between boys are based on shared activities or interests.
---Isn’t it time you went to bed, Mike?---I _____ painting all afternoon, so I have to finish my homework now.