Many people believe we are heading for environmental disaster _____ we basically change the way we live.
| A．but | B．although | C．unless | D．once |
Living with host families, ________ there may be other college students, gives her the chance to learn more about the new culture.
| A．on which | B．about which |
| C．in which | D．among which |
She has a gift for creating an atmosphere for her students ________ allows them to communicate freely with each other.
| A．where | B．which | C．what | D．who |
I could see a whale ________ by a pack of about six other killers.
| A．having been attacked | B．being attacked |
| C．to be attacked | D．be attacked |
The plan has to be ________ to meet the real situation.
| A．adjusted | B．adopted | C．operated | D．reflected |
Do these plans ________ your arrangements?
| A．catch up with | B．put up with | C．get on with | D．fit in with |