单项选择题
Up to now, the work has been easy.()
A. So B. So long C. So that D. So far
单项选择题 He purchased a ticket and went up on the top deck.()
单项选择题 It is anticipated that this contract will considerably increase sales over the next three years().
单项选择题 After the accident, my back was very painful for a long time.()
