“Mary, don’t take it ______ when your teacher makes some general and unpopular remarks in class. Just try your best”, said her mother.

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

Last night Mr. Crook didn’t come back at the usual time. ______, he met some friends and Stayed out until midnight.

The demand for _____ skilled workers is still increasing.

Cloning plants is straightforward while cloning animals is _____________ more complicated.