–David, it’s Frank. Do you have a few minutes? I need to see you. -- _______. But I hope “a few minutes” doesn’t turn into an hour.
The recorder doesn’t work. Something seems ______ wrong with it.
Something must be done now to change the situation _______ top students dominate everything in our English learning class.
China has launched another man-made satellite,________ is announced in today's newspaper.
______ can do a job patiently and attentively for many years unless he loves it.
Environment protection requires our joint effort. ______ will be achieved unless we work well together.