.By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t have to return.
Do you think this shirt is too tight___the shoulders?
Can you tell the___difference between the words”require”and “request”?I sometimes get puzzled by their meanings
“Perhaps we need to send for Dr.Smith to see what we can do about it,”Father suggested___to his neighbor who had come to discuss the problem
The research lacks ___evidence,and therefore,its conclusions are doubtful
We used to see each other___,but I haven’t heard from him since last year