Perseverance is a kind of quality, and that is ______ it takes to do everything well.
| A．why | B．that | C．what | D．which |
__________I can see，there is only one possible way to keep away from the danger.
| A．As long as | B．As far as |
| C．Just as | D．Even if |
We were swimming in the lake__________suddenly the storm started.
| A．when | B．while | C．until | D．before |
—Dad，I’ve finished my assignment.
—Good，and__________you play or watch TV，you mustn’t disturb me.
| A．whenever | B．whether |
| C．whatever | D．no matter |
__________I know the money is safe，I shall not worry about it.
| A．Even though | B．Unless |
| C．As long as | D．While |
He made a mistake，but then he corrected the situation__________it got worse.
| A．until | B．when | C．before | D．as |