________ the 2020 Olympic Games will be held in Beijing is not known yet.
| A．Whenever | B．If | C．Whether | D．That |
At the age of fifteen she gave up taking piano lessons to _____ her school work.
| A．hold on | B．call on | C．put on | D．concentrate on |
It is still under discussion _________ the old bus station should be replaced with a modern hotel or not.
| A．whether | B．when | C．which | D．where |
David is a skillful worker. I’m sure he has enough _______ to fix all the electronic ______.
| A．experience; equipment | B．experience; equipments |
| C．experiences; equipment | D．experiences; equipments |
Going out is________ good means of relaxation. Would you like to go to ________ with me in the afternoon ?
| A．the; the | B．a; the | C．the; a | D．a; a |
— Do you know Sam didn’t pass the swimming test this time?
—_____________ His coach said he was the best one in his team.
| A．So what? | B．How come? | C．Not at all. | D．I don’t think so. |