—Could you help me take care of my pet dog on the weekend?
— I’m afraid I’m not that day.
| A．vacant | B．sufficient | C．convenient | D．Available |
My neigh bours used to give me a hand in time of trouble, _______ was very kind of them.
| A．who | B．which | C．that | D．it |
I want to use the same tools _______used in your factory a few days ago.
| A．as was | B．which was | C．as were | D．which |
I have two grammars, ______are of great use.
| A．all of which | B．either of which | C．both of that | D．both of which |
That is not the way ______I do it.
| A．/ | B．which | C．for which | D．with which |
He is working hard, ______will make him pass the final exam.
| A．that | B．which | C．for which | D．who |