He hthe chance of dealing with difficult problems ____ tohim.

When _________ our national flag _______, we feel our hearts full of pride and strength.

Some can never go above 4000 meters, because their body is unable to ___________ these extreme conditions.

older generation used to advise usnot to build ____ in the air, but that’s not realistic at all.

So absorbed _____ in the experiment that he didn’teven notice it was already over 12 o’clock