I usually sleep with the window open _____ it’s very cold.
| A．until | B．unless | C．when | D．if |
The new actor was very nervous when he stood on the stage and his heart _________ so fast at that time.
| A．is beating | B．was beating |
| C．will beat | D．beat |
The fox _________ the meat at once and went away, leaving the crow crying.
| A．looked up | B．put up |
| C．picked up | D．gave up |
Yancheng City Ocean Bay held her first Cherry Blossom Festival ________ March 28,2015.
| A．at | B．in | C．on | D．during |
--____________ you give me a hand? The box is too heavy. --- No problem.
| A．should | B．Could | C．May | D．Must |
While I was walking along the lake, I saw some fish________ out of the water.
| A．to jump | B．jumps | C．jumping | D．jumped |