The apple not only looks beautiful but also tastes ________.

[　　]

I think you should add some more salt to this dish, it's not ________.

[　　]

Do you remember the trees which ________ by us last spring?

[　　]

My mother told me that my homework must ________ on time.

[　　]

The worker came up with a good solution__________.

[　　]

Yesterday I took Tom's schoolbag home ________.

[　　]

Our classroom ________ every evening

[　　]

Keys ________ used for ________ the doors.

[　　]

This machine was invented in ________ century in Germany.

[　　]

--When shall we meet again next week ?

--________ day is possible. It's no problem with me.

[　　]