The drug is said to have side effects and has been __________ from the market for further tests.

The silly crow（乌鸦）wanted to______ its song but none would enjoy it.

If you are an Englishman, you may say “________________”

That fellow hung around for hours and, ______ was worse, kept me from doing my work.

Visitors were _____at the _____pictures that theguide showed.