答案：A

主要测试动词短语。首先把四个答案的汉语意思做到心中有数。可以从以下的例句中看出：※I hoped that our firm would join up with one of the largest companies of the country .

　But it doesn’t seem to be working out that way .

※------I wonder if you can work out this problem . ------ I shan’t know until you try me out .

※Please carry on as usual while I listen to the class .

※--I want to go on being a teenager, because I am enjoying every minute of it 至此可以选出来答案。