---Mr. Black, I just can’t get my car started. I think there’s something wrong with the engine.

---Oh, let me see. Ah, that is not _______ it is. Actually, your car has used up all the petrol.

A. where B. when

C. what D. how

Once a schedule is made, by strictly _______ it, you can avoid putting off till tomorrow what should be done.

A. arranging B. measuring

C. observing D. presenting

Many plants could move northward and toward the Pacific coast _______rising temperatures and changes in rainfall.

A. for fear of B. in defense of

C. by means of D. in reaction to

---Your grandfather still seems very energetic, although he is already in his seventies now.

---Yes, he _______in the army for three years when he was young.

A. would serve B. served

C. had served D. has served

Mr. Smith is always on time for everything. How ____ it be that he was late for the important meeting?

A. should B. can

C. may D. must

Although she brushed the old pot_______, she could not make it completely clean, which made her very upset.

A. roughly B. thoroughly

C. instantly D. occasionally

--- I can’t carry the luggage. It’s so heavy.

--- Why not have someone strong enough_______ you a hand then?

A. give B. to give

C. giving D. to have given

---Tell us, Mark, what is the cause of the American Civil War?

---Well, is it _______the black slaves wanted freedom?

A. how B. why

C. because D. when

--- Jack fell off the ladder yesterday, but he is all right now.

---What a lucky dog! He _______ himself badly.

A. could injure B. must have injured

C. should injure D. might have injured

The temperature has risen to more than 20 degrees centigrade. It is quite hot _______January in Zhejiang.

A. for B. in C. as D. like