The climbers succeeded in climbing to the top of the mountains, and they owed their success to the preparations they ______.
| A．make | B．had made | C．made | D．have made |
Assistance dogs are trained to help disabled to live more independent life.
| A．/; a | B．a; the | C．the; the | D．the; a |
— Leo, I finally persuaded my mother.
— So we can go to the basketball club tonight.
| A．All the best. | B．Never mind. | C．Well done! | D．Good luck! |
Had he studied harder, he______the final exams.
| A．would pass | B．could pass |
| C．had passed | D．would have passed |
Our parents always tell us to believe in_______we do if we want to succeed.
| A．why | B．how | C．what | D．which |
_____entering the classroom, remember to take your seat and turn off your cell phone.
| A．At | B．From | C．Upon | D．As |