---Have you seen ____ pen ? I left it here this morning .
---Is it _____ black one ? I think I saw it somewhere.
| A．a; a | B．a; the | C．the; a | D．the; the |
An awful accident ________， however, occur the other day.
| A．does | B．did |
| C．has to | D．had to |
It was lack of money, not of effort, ________ defeated their plan.
| A．which | B．as |
| C．that | D．What |
— Was it under the tree ________ you were away talking to a friend?
— Sure. But when I got back there, the bike was gone.
| A．that | B．where |
| C．which | D．While |
--- How____ your weekend？
---- It was interesting.
| A．are | B．was | C．do | D．were |
Lily is so happy _____ delicious soup for her parents.
| A．to make | B．make | C．making | D．makes |