Misunderstandings________from lack of social communication，unless________properly，may lead to serious problems

Do you think he can get the first prize for jumping?—Impossible nowHeto do so, but he has just hurt his leg

Must I give up drinking coffee, doctor—No, you _________. Drinking coffee is good for your health.

On weekends, I can’t relax _______, I have to _____my homework

oblem may not____, but there’s no harm tobe careful.