There is no doubt _______ the famous professor will come to give us a lecture.
| A．if | B．that |
| C．what | D．whether |
You had better book rooms at the hotel in advance you should find no room on your arrival.
| A．so that | B．even if |
| C．in case | D．now that |
You can be another Jeremy Lin you set an achievable target and stick to it.
| A．once | B．though | C．before | D．until |
He is welcome to come along, he behaves himself.
| A．provided that | B．so far as |
| C．even if | D．in case |
e-commerce worries some merchants, it contributes to the development of delivery industries.
| A．When | B．Unless | C．While | D．Until |
Paying to see that movie seems foolish you can see it on television for free.
| A．before | B．though | C．when | D．once |