It’s necessary that he a recognized qualification .
| A．has |
| B．have |
| C．had |
| D．having |
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 |