The car is environmentally friendly because it uses electricity instead of gas. _____, it is less expensive.

After four years’ research, we now have a ______ better understanding of the disease.

— Guess what? One bullet struck my car,          missing me yesterday! — Lucky you ! Come back to our motherland as soon as possible!

We can get a lot of useful information on the Internet; ______, the Internet also provides us with a new way of communication.

What a mess！Tom，I have told you over and over again not to leave everything       .