【简答题】根据下列各句意思及所给单词的首字母或汉语提示,写出该单词的正确形式。 小题1:I hope this summer holiday will be _____________(有益的) to your study. 小题2:He was the only _____________( 目击者) of the accident, who would give important informatio...
【简答题】根据下列句子所给汉语意思或提示,写出空缺处单词的正确形式。 小题1:Scientists are ________ (调查) into the cause of cancer. 小题2:To get the job done, one should be ________(精力充沛) and hardworking. 小题3:As a ______(奖赏)for passing her exam...