Question

. John hadn’t been able to quit smoking at once; he had to control his smoking desire      .

A．more or less

B．by and by

C．little by little

D．now and then

Answer 1

C

詞組辨析;A. more or less或多或少B. by and by逐漸的C. little by little一點一點的D. now and then時而，句意是：約翰不能立刻戒煙，他不得不一點一點的控制抽煙的欲望。所以選C。