He was known to have been hanging about and was not expected to pass the test. ______, his failure came as no wonder to his parents.

It’s too late to go to the basketball match now;         , it’s beginning to rain.

The lake is _____ beautiful in spring and summer because of the pleasant weather in both seasons. 

The students are ___ young people between the age of sixteen and twenty.

The 18 college students in Fudan University should           show their greatest respect to their hero — Zhang Ninghai instead of being cold and unfeeling.