Part I Vocabulary and Structure词汇与语法单选题( 1 x40 points)Directions: There are 40 incomplete sentences in this part. For each sentence,there are fourchoices marked A, B, c and D. Choose the one that best completes the sentence, and then mark the corresponding letter on the Answer Sheet.1. Only with your help_______ such difficulties in the field.
A. can we overcome
B. we can overcome
C. should we overcome
D. we should overcome