用be 动词的适当形式完成句子。 1.There ____ ( be) a great number of books in the shelves. 2. The number of guests invited ____ (be) 50, but a number of them ____ (be)absent for the heavy rain. 3. Quantities of water ____ (be) polluted now. 4. A great deal of oil ____ (be)poured into the sea and did great harm to creatures in the water. 5. Many a famous writer ____ ( be) an alumnus ( 撰搞人) of a local newspaper. |