Glad to see you back. How long in Russia?
| A．did you stay | B．have you stayed | C．were you staying | D．have you been staying |
Mr.Smith was much surprised to find the watch he had had _______was nowhere to be seen.
| A．it | B．it repaired | C．repaired | D．to be repaired |
Only when class began _______that he had left his book at home.
| A．will he realize | B．he did realize |
| C．did he realize | D．should he realize |
The students in this college are all taking courses _______a degree.
| A．devoting to | B．turning to | C．leading to | D．sticking to |
----You can’t finish the book in less than an hour, I suppose?
-----________.
| A．Yes, I’m sure I can | B．No, hardly |
| C．Sorry, I can’t | D．I don’t think I can |
They said good-bye, little knowing that they_______ again.
| A．were never met | B．will never meet |
| C．never met | D．were never to meet |