I think _____ is very important for students to study by themselves in the school or at home.A. it B. this C. that
______healthy,you should take more exercise and eat more healthily .
The expressions they use might whom they are speaking to or how well they know each other.
The machine doesn’t work .I think it needs _____.
On my way home,I pass a fruit shop every day.
I have great_____ in learning math and I am so worried.