Pets____constant care are not suitable for people with little spare time.
A、require
B、requiring
C、required
D、to require
2. In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.
A、there
B、thick
C、thank
D、thirty
As the manager of this new company, Charles____lots of work and almost had no time for pleasure.