I tried many times, but I still failed in the experiment.– Don’t be discouraged. ______ and the problem will be settled.

Since smoking is a bad habit, to keepyourself fit,you should try to _____ it.[ ]

There is no doubt that our educational systemleaves something __________

Sosudden ________that the enemy had no time to escape.

As he works in a remote area, he visits his parents only ____