On Radio Beijing everyone needs _______English well.

Is this a(n) ________ painting by Picasso? —No. It’s only a good copy. [ ]

ng Wendy’s menu, I found that many of the items are similar to _______ McDonald’s.

They are still very cautious about ______ side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.

30．The extra room________very useful when we had visitors