—Have you forgotten anything,sir? —Oh,I forgot to pay.You see,I'm terribly sick,but I ______ to.
The car ______ at the present speed until it reaches the foot of the mountain at about ten o’clock tonight.
Though ______, many laws of nature exist.
_____, I couldn’t find a solution to the problem.
The servant did _____ she could ______ the revolutionary.
If you ______ the medicine you ______ better now.