You cannot accept an opinion ______ to you unless it is based on facts.
| A．offering | B．to offer |
| C．having offered | D．offered |
—Ready to give up guessing, Sandy?
—No, no. Hold on! I think I _______ at the answer now.
| A．arrive | B．have arrived | C．arrived | D．am arriving |
He made a promisehe would not play computer games again at school.
| A．which | B．where | C．how | D．that |
Newly-developed materials for spaceships can _______ extreme weather conditions.
| A．hold | B．support | C．stand | D．compete |
The first prize goes to _______ makes the greatest contribution to our school.
| A．whomever | B．whichever | C．no matter who | D．whoever |
his homework, my son went downstairs to play basketball.
| A．Having finished | B．finished | C．to finish | D．finishing |