单选题 --Is the basketball under the desk yours? No it’s my _______. He left it there just now.

单选题 Go straight and _______ left at the first turning.

单选题 Work hard, _______ you’ll get good grades.

单选题 There are two _______ in front of house.

单选题 The old professor still works hard though he is _______.

单选题 My teacher often _______ us not to play on the street.

单选题 Some boys _______ on the playground now.

单选题 Ted was hard-working. His success made him work _______.