We won’t give up ______________we should fail ten times.
| A．even if | B．since | C．whether | D．until |
September 8th，1931 is a special day，________, I think，that will be remembered by the Chinese forever.
| A．one | B．it | C．which | D．that |
I ______ him in time, otherwise he would have fallen off the bike.
| A．had supported | B．supported | C．have supported | D．support |
_______ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
| A．Even if | B．As far as | C．If only | D．So long as |
--How do you think I can make up with Tom?
---Put aside_____ you disagree and try to find_____ you have in common.
| A．what, what | B．where, what | C．what, whether | D．where, whether |
________, his idea was accepted by all the people at the meeting.
| A．Strange as might it sound | B．As it might sound strange |
| C．As strange it might sound | D．Strange as it might sound |