C. mightn’t have done
D. didn’t have to do
4. The newcomers found it impossible to ________themselves to the climate sufficiently to make permanent homes in the new country.
A. suit
B. adapt
C. adopt
D. coordinate
5. __________ she realized it was too late to go home.
A. No sooner it grew dark than
B. Hardly did it grow dark that
C. Scarcely had it grown dark than
D. Ii was not until dark that
6. In no country ________Britain, it has been said, can one experience four seasons in the course of a single day.
A. other than
B. more than
C. better than
D. rather than