17) (A) Wait for me (B) until I (C) will come back (D) from Britain.
Choose the word or phrase that best fits the blank space in the following passages:
There are a few rules that all visitors to wildlife preserves should observe. (40)__________ these rules is necessary
if people want to enjoy themselves and have an (41)__________ experience. First of all, it is (42)__________ to
leave your car in the car park so as to cause as little disturbance as possible to the varied wildlife. Animals can be
frightened by unexpected noises, (43)__________ those made by machines. Secondly, people need to be patient if they
want to see the animals in their natural (44)__________ . This often means that people have to put up with
(45)__________ weather conditions and annoying insects.
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