The fire spread through the hotel very quickly but everyone _____ get out.
| A．had to | B．could | C．was able to | D．could |
The conference had been held to discuss the effects of tourism ___ the wildlife in the rainforest.
| A．in | B．on | C． at |
D．with |
Specialists may be useful to _____ a situation and suggest solutions.
| A．analytical | B．analyze | C．analysis | D．analyst |
Problems _____ because they were lack of communication.
| A．raised | B．rose | C．arose | D．aroused |
While he was ______ about in the street, Mary came up to him.
| A．wandering | B．wondering | C．wondered | D．wandered |
---- I must be off now. See you!
---- ________. See you!
| A．Walk slowly | B．Nice to meet you |
| C．Take care | D．Be careful of safety |