——You know Mr. Green has been ill for days? ——Yes, I wonder if he is ____ better now.
I was enjoying my dinner and talking to my American friend Janice at the table _______ I noticed people staring at us.
It’s really unbelievable! Can you _______ her swimming across the English Channel?
There was _______ time _______ I hate to go to school.
---It’s getting dark, but Mr. Johnson is still at his office. ---No surprise. Who else can ______ he does?
Since David ______ downloaded a virus into his computer, he can not open the file now.