I really don’t know _______ I put my wallet.
| A．where was it | B．it was where that |
| C．where it was that | D．where was it that |
Not until he failed the exam _______he had left his books untouched .
| A．did he realize | B．had he realized | C．he realized | D．he had realized |
It was not just the size of the school but ________ it provides for us students________ made it unique.
| A．that; that | B．what; that | C．what; what | D．that; what |
Nowadays we take___ exercise a day as we need because of widely used automobiles.
| A．less than half | B．less than as half as |
| C．less than half as much | D．half less than |
Considering your salary, you should be able to ____ at least twenty dollars a week.
| A．set up | B．set out | C．set down | D．set aside |
________ we had expected, the new iphone 5c has a plastic packing and is available in several colours: green, white, blue, pink and yellow.
| A．Which | B．That | C．Who | D．As |