Please _____ ___ the questionnaire.

请把附表填好。

It is _______ ____ ____ a made up story.

这只不过是个杜撰的故事而已。

在正式的舞会上，我感到局促不安，很不自在。

At the formal party, I felt very awkward and ___ __ _____.

与她姐姐相比，她个子很高。

__ ________ __ (contrast) her sister, she is very tall.

The word "tangible" means:

Astronauts have to ________the unknown.

宇航员必须面对未知。