---Mary looks down today. What is up?
---Well, ____ happened between Mary and me is none of your business.
| A．wherever | B．whoever | C．whatever | D．no matter what |
. He didn’t know _______ or stay.
| A．to leave | B．if that he should leave | C．if to leave | D．whether to leave |
.---Will the Smiths go abroad this summer? ---No, they finally decided _______ .
| A．to | B．not going | C．not to | D．not to be going |
. ---I usually go there by train. ---Why not _______ by boat for a change.
| A．to try going | B．trying to go | C．to try and go | D．try going |
.He pretended _______ nothing about it.
| A．know | B．to know | C．knowing | D．Knew |
. Little Jim should love _______ to the theatre this evening.
| A．to be taken | B．to take | C．being taken | D．Taking |