Can you swim –___________, but my brother Tom can.

fortunate to pick up a wallet on the ground on the way home, but unfortunately for me, I found my color TV set when I got home.

Will you go to the exhibition tomorrow?—Yes, I will go ________ it’s rainy.[ ]

of the crowded bus __________, who wasdressed in a black suit and waving to a woman

There are eight tips in Dr.Roger’s lecture on sleep，and one of them is：________ to bed early unless you think it is necessary.