—— The water changes into thick ice covering rivers and lakes in winter in Harbin. —— ____ in Urumqi and children go skating on it then.
_________many times, he finally understood it.
This morning, I rushed to the library, only ________ that its door was still locked.
_______ with so much trouble, we failed to complete task on time.
What we should be thinking about now is how to make up for the lost time, not who is _______.
It is your attitude, rather than your aptitude(天资), ________ determines your altitude.