238. --- Ought he to get down to his work at once? --- Yes, he _____.ought B. ought to C. must D. should to
If you want to visit the museum, I recommend ___________ there by underground.
He is going into hospital to have a small __________ her knee.
___ in experience, she didn’t manage to pass the interview.
Stress can be extremely damaging to your health. Exercise, __________, can reduce its effects.
In the meantime, the question facing business is whether such research is ______ the costs.