Only when I left home to go to college ___ how much my mother had done for me.
| A．did I realize | B．I realized | C．had I realized | D．I had realized |
.
He made the choice to give all his money away, ______, he said, brought him happiness.
| A．it | B．that | C．which | D．this |
.
This is the best restaurant in our town. I’m afraid you can’t find _______ here.
| A．a better one | B．the better one | C．the best one | D．any best one |
.
Can you see the tree _____ we tied our boat last time?
| A．that | B．in which | C．on which | D．to which |
.
---- Ricky, why hasn’t Billy been with us these days?
---- Oh, he is _________for next month’s 400m race.
| A．standing out | B．taking up | C．backing out | D．working out |
.
– Jack, when shall we go to visit Mr. Smith?
– It’s up to him. We’ll go to see him whenever _______.
| A．he is convenient | B．he will be convenient |
| C．it will be convenient for him | D．it is convenient for him |