The children enjoyed ______ in the zoo.
This ________ Linda. ______ is my sister.
--___________?--I’m fine. Thank you.
—We’d like you to start work tomorrow if possible.—I’m sorry, but I can’t possibly start until Monday. _______?
Children found the lecture so hard _______that they felt sleepy.
_______,when Marx was already _______,he found it was important to study the situation in Russia, so he began to learn Russian.