单选题20. Only in this way ______ make improvements in the operating system.
单选题5. It's true that not having a car imposes some ______, but owning one also complicates life in many ways.
单选题16. We will not succeed in studying English ______ we study hard.
单选题37. The little girl could not ______ the attraction of the piece of the chocolate.
单选题 Referring to reading
单选题35. Only by telling the truth ______ win the trust and support of your friends.
单选题3. ______ the English examination I would have gone to the concert last night.
单选题56. He didn't keep on asking me for a ride any longer as he had already got his own car ______.
单选题 I thought I was going to fail the exam
单选题24. Smoking and drinking may ______ heart disease and cancer.
单选题1. The puzzle was so difficult that I gave up it in the end.
单选题9. The man lost his ______ just because his secretary was ten minutes late.
单选题1. Not only I but also Jane and Mary ______ tired of having one examination after another.
单选题 My daughter runs faster than ______ in her class
单选题37. All I can do now is nothing ______.
单选题13. Thank goodness that's over! I ______ it if I ______ it was going to take me so long.
单选题17. The office was in darkness ______ the light over his desk.
单选题25. ______ that the pilot couldn't fly through it.
单选题 The driver admitted that not only ______
单选题22. You must try to ______ looking after yourself.