42. You’d better start it right away ______ you forget it.
| A．in case of | B．unless | C．before | D．Since |
--- How long are you staying?
--- I don’t know. .
| A．That’s OK | B．Never mind | C．It depends | D．It doesn’t matter |
－What made Susan so angry?
－____ in the rain for a long time.
Being kept waiting B. Being kept to wait
C. Because of waiting D. She was kept waiting
—— Do you mind my opening the window? It’s a bit hot in here.
——________, as a matter of fact
| A．Go ahead | B．Yes, my pleasure | C．Yes, I do | D．Come on |
I’ve been working all day, but I feel as if I _______ nothing.
| A．have been achieved | B．were achieving | C．had achieved | D．am achieving |
－Look! How busy the building workers are!
－Yes, I see. The houses ____ by them will be completed next week.
| A．built | B．being built | C．to be built | D．having been built |