_________ I will visit Brazil during the 2016 Olympic Games.
| A．If I am possible | B．If it possible | C．If I possible | D．If possible |
The farmer used wood to build a houseto store grain.
| A．with which | B．in which | C．which | D．where |
According to the periodic table,still some elements undiscovered.
| A．there seem to be | B．it seems to be | C．it seems that | D．here seem |
Calculations, which are astronomically exact, have been madewith the use of computers.
| A．possible | B．it possible | C．possibly | D．to be possible |
The man deniedany thing at the supermarket when he was questioned by the police.
| A．to have stolen | B．having been stealing | C．having stolen | D．to steal |
“Do you thinkI should attend the lecture?” she asked me.
| A．that | B．whether | C．if | D．when |