15. Everybody, now I ________ the test tube over the flames; now you can see that the liquid is beginning to change colour.

  A) place           B) placed        C) had placed     D) have been placing

The home improvements have taken what little there is ___ my spare time

Afrom    Bin       Cof     Dat

介词的基本用法与习惯搭配

 He came back late, ________ which time all the guests had already left

  A) after            B) by                C) at                D) during

 I don’t think ________ of the two books is suitable for me to read Please show me ________

  A) neither, the others  B) either, another  C) none, another   D) both, the other

代词：人称、物主、反/自身、指示、相互、疑问、不定代词

 As they were classmates, ________ was no wonder that they should do the work in the same way

  A) This            B) That           C) There         D) It

 You are a student of ________ history Can you tell me something about ________ history of the Great Wall?

  A) /, the            B) the, /           C) /, a           D) a, /

 – Have you seen ________ pen? I left it here this morning

– Is it ________ black one? I think I saw it somewhere

a, the           B) the, the          C) the, a         D) a, a

26．一Why didn’t Alex attend the party yesterday evening?

       一He          not have wanted to see me·

       A．should              B．might              C．could           D．Would

If you are looking for ______ winter adventure, Kitzbuhel is ______ home to it.

   A.  a,  a    B. the, the   C. a , /    D. the , /

It is reported that the United States uses  _____ energy as the whole Europe.?

A. as twice more  B. twice more as  C. twice much as  D. twice as much ?