The poor boy couldn’t work the problem out He wasn’t ____clever

ng Xiaoping was our general designerof reform and opening up to the outside world. After he passed away, his ____were scatteredover the sea.

21．Chinit more andmore difficult to buy a flat in cities.

The ____ expression on his face suggested that he ____ understand what I said.

spects of a pilot’s job __________ be boring, and pilots often__________ work at inconvenient hours