单选题“Could I borrow your bike?”
“Yes, you_________”.
单选题The CEO needs an assistant that he can __ to take care of problems in his absence.
单选题If I were the president of a university 1 should __ a compulsory course in "How to Use Your Eyes".
单选题_______ WAP technology, people can do their work anywhere anytime.
单选题America's early __ were attracted by the fertile land and varied climates it offered for farming.
单选题A complete refining installation must include all necessary__.
单选题The costs may be so high that no company will ______ the work,
单选题Washington was __ by French architect Pierre L'Enfant in the late 18th century.
单选题In labs around the world, bad bugs are undergoing the ultimate rehabilitation, being _______ from life-threatening viruses and bacteria into lifesaving therapeutic agents.
单选题Tilden, the other presidential ______, actually received more votes.
单选题The medical record shows that it was the drag, not the disease, __ him several years ago.
单选题The President declared that the nation's energy demands __ so rapidly since 1968.
单选题I often __ about how quickly time flies.
单选题Soccer is a fast sport ______ demands strong, hard play.
单选题Few people who __ of high school will be rich.
单选题To find out how the bees managed to tell time, an unusual experiment was _______ four years ago.
单选题Shipbuilders would not _____ their money unless they knew that they could make a profit.
单选题To a scientist the main reason for exploring the Antarctic is
单选题Wonderful __ of nature are all around us.
单选题One main branch of sea science, __, holds enormous unanswered questions.