Why not try your luck downtown, Bob? That’s __________ the best jobs are.
| A．where | B．what |
| C．when | D．why |
I ______ tell you with certainty that he won’t be able to finish it before the deadline.
| A．will | B．must | C．can | D．may |
His humorous closing speech was a welcome addition to the ______dull meeting．
| A．therefore | B．meanwhile | C．otherwise | D．nevertheless |
Someone _______ his car in front of my house and it is blocking my driveway.
| A．had parked | B．was parking | C．parked | D．has parked |
Many people can’t learn any lessons from the mistakes they’ve made_____they get hurt somehow.
| A．whether | B．unless | C．if | D．as |
The performance will be given next week. You can go to the student union ______ tickets.
| A．for | B．with | C．by | D．on |