第一节单项填空（共15题；每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最佳选项, 并在答题卡上将该项涂黑。
The book focuses on _____ tragedy of Ron Williamson, a baseball hero from _____ small town in Oklahoma.
A. a; the B. the; the C. the; a D. /; a
My computer is out of _________ order all of a sudden. Could you do me________ favor and type the plan for me right now?
| A．the; a | B．the; 不填 | C．不填; a | D．不填; 不填 |
— Why are your hands that dirty?
— Oh, I______ in the garden since we finished breakfast.
| A．worked | B．was working |
| C．am working | D．have been working |
Yesterday I went to see him, _________ that he had gone abroad two days before.
| A．only to learn | B．to learn only |
| C．only learned | D．only learning |
Every year，a good many tourists are attracted to visit the old temple ________back to the eleventh century.
| A．dated | B．dating | C．to date | D．being dated |
________that we can’t get the necessary equipment，we will have to give up the experiment.
| A．To assume | B．Assumed | C．Assumes | D．Assuming |