There are eight tips in Dr Smith's Lecture on sleep, and one of them is： ________ to bed early unless you think it is necessary.

［　　］

The number of people present at the concert was _________ than expected. There were many tickets left.

［　　］

Fred is second to none in maths in our class, but believe it or not, he _________ passed the last exam.

［　　］

Alien had to call a taxi because the box was _________ to carry all the way home.

［　　］

We won't give up ________ we should fail ten times.

［　　］

--Oh, it's you! I _________ you.

--I've just had my hair cut, and I'm wearing new glasses.

［　　］

Visitors _________ not to touch the exhibits.

［　　］

I know this one is different __________that one, but I can't tell the difference _________ them.

［　　］

The boy wanted to ride his bicycle in the street, but his mother told him __________.

［　　］

What's the language _________ in Germany?

［　　］