____ the main idea of the text, and you will be able to answer the question.
A. Grasp B. To grasp C. Grasping D. Grasped
The car is environmentally friendly because it uses electricity instead of gas. _____, it is less expensive.
A. Besides B. However C. Instead D. Therefore
She showed me a red silk dress _____ online, which cost her only 10 dollars.
A. to be bought B. being bought C. bought D. having bought
Having no enough time to practice, the girl wondered whether she _____ pass the driving test.
A. should B. could C. might D. must
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
A. in case B. now that C. even though D. so that
—You seem tired, David.
—Yes. I _____ all day long and can’t wait to go to bed now.
A. am working B. had been working
C. have been working D. was working
