We haven't been lucky ________ to see a whale in the ocean.
enough
Larry prefers sea animals ____ land animals.
to
We see _______ turtles on the beach than in the ocean. There are much more of them in the ocean.
fewer
Scientists know ________ about Venus than about Mars. Venus hasn't been explored as much.
less
Vicky wants to work with animals _______ _______ people
rather than / more than
It's _______ difficult to memorize dates than it is to remember names.
less / more
