—Cathy, did you attend the lecture given by Mr. Black last night? —No. I ______ a report at the office.
—We need to buy some summer clothes, John.—Oh, I never know ________when I'm in the store.
—Isn't Miss Brown here yet?—No.________, she's not here yet.
The temperature is high enough ________water into vapor(蒸汽).
There is no good for the parents to provide everything________their children.
Wait until you are________in.