—Do you think playing cards is beneficial to our study?—No,if ________,it can help us kill time when we have nothing to do.
Nowadays people are more concerned about the environment ___ they live.
____ which university to attend, the girl asked her teacher for advice.
He is so busy. He cannot afford enough time with his son ____he wants to.
____you said at the meeting describes a bright future for the company.
--Why are your eyes so red? You _______ have slept well last night.