_______ a reply from Mabel, Jack sent another e-mail to her.
| A．Not receiving | B．Having not received |
| C．Not received | D．Not having received |
This ______ of culture between Europeans and the Romany led to many nations taking action against them, even banning Romany groups from entering.
| A．collision | B．switch |
| C．surplus | D．dimension |
At the age of 14, Father had to leave school and start working. There would be no one to support the family _______ he not worked.
| A．did | B．has | C．had | D．was |
Having proper motivation is not _______ —it is another key to success.
| A．artistic | B．enterprising |
| C．investigate | D．optional |
Don’t worry. They ______ to consider your advice. Let me remind them of it now.
| A．could forget | B．could have forgotten |
| C．should have forgotten | D．should forget |
Before we go any ______, it’s important to make sure you understand what an interview is and why it’s arranged.
| A．far | B．farther |
| C．further | D．furthering |