____ caused the accident is still a complete mystery.
Someone who lacks staying power and perseverance is unlikely to ________a good researcher.A.make B.turn C.get D.grow
—Have you finished reading Jane Eyre?—No,I ________my homework all day yesterday.
The last one ________pays the meal.
She devoted herself ________to her research and it earned her a good reputation in her field.
I have to go on,________difficulties I will meet.