Our bodies are strengthened by taking exercise,________,our minds are developed by learning[ ]

When the bell rang, the senior employee his watch and left, thinking that he was going to catch the next train.

To enjoy the scenery,Tom would rather spend long hours on the train________travel by air.[ ]

____thefact that doctors have warned that smoking causes cancer, people still keep onsmoking.

The bookcase is too for little Tom．He can’t put the book in it．