---Where is mother?
---She is in the kitchen. She ___ the dinner for the party the whole afternoon.
A. is preparing B. was preparing C. has preparing D. has been preparing
The students _______ busily when Miss Brown went to get a book she _______ in the office.
A. had written; left B. were writing; has left
C. had written; had left D. were writing; had left
The building which _____ now will be our science laboratory.
A. is being built B. will be built C. is built D. has been built
---What bad weather! It’s raining all these days.
---Yes, the river has _____ two feet.
A. risen B. lifted C. grown D. raised
The harder you_______ , the greater progress you______ .
A. will study; will make B. will study; make C. study; make D. study; will make
The young man admitted, after several hours questioning,_______ a wallet from the passenger on the bus.
A. having stolen B. to have stolen C. being stolen D. to steal
