—Did you receive my letter?
—I received one just as I .
| A．set out | B．had set out | C．was setting out | D．would set out |
Come and see me whenever ____.
| A．you are convenient | B．you will be convenient |
| C．it is convenient to you | D．it was convenient to you |
It is strange that he _________ in such an important examination .
| A．failed | B．should fail | C．should have failed | D．fails |
After ten hours’ operation, the doctors managed to _____the one-year-old twins at the head.
| A． tell | B．separate | C．divide | D．Remove |
It is greatly ________ that he gave back the money he found on the bus.
| A．for his delight | B．to his delight | C．to his credit | D．in his credit |
New reports say peace talks between the two countries have broken ____with no agreement ________.
| A．down, reached | B．out ,reach | C．in ,reaches | D．up, reaching |