Do you mind if I close the window— ______. It’s so hot in here.

Of all the CD players in the shop, this oneis ________.

er to get happiness, many people chase afterreputation or money aimlessly. However, in most cases, real happiness isactually _________.

The engineers a new computer in our classroom the whole yesterday morning, so we had our classes in the school hall.

与“故垒西边”句中的“故”意义相同的是