Strong sandstorms are often _____ you cannot see the sun.
As soon as little Tom had ________ a little from his operation at his back, his first thought was to get out to meet his friends.
After three hours' discussion, the meeting finally ________ without any agreement on the issue.
It is quite often that the workers are always ________ by heat if they work outdoors for a long time in the hot summer afternoon.
Britain is being ________ in the race for new markets.
This ship set sail and gradually disappeared where the sea ________ the sky.