.By using ear sonecan tell the direction____a sound comes.
—David is often absent from class.—Tell him he ________ answer for it if he goes on behaving like that.
A hot balloon blew up in Egypt. There ________ something wrong with the quality of it.
There was something wrong with the network, or the email ________ earlier.
—________ you leave now? You only arrived an hour ago!—Sorry, but so much homework is waiting for me.
The parcel was a whole week late. How I wish I ________ air mail instead.