—When can I get my car back?—I think it sometime later today. Give me a call around 3 o’clock.
---Where is mother? ---She is in the kitchen. She ___ the dinner for the party the whole afternoon.
The students _______ busily when Miss Brown went to get a book she _______ in the office.
The building which _____ now will be our science laboratory.
---What bad weather! It’s raining all these days. ---Yes, the river has _____ two feet.
The harder you_______ , the greater progress you______ .