In the global economy,a new drug for cancer,________it is discovered,will create many economic possibilities around the world.
In the TV ad, the actress is asked to jump with her mouth ________ open, showing her ________ teeth.
I cannot thank you ________ much. I might never have been admitted to such a famous university but for you.
We'd better grow the plant in a ________ plastic box so that the children can see the roots growing.
—Oh, I've just locked my keys in my office again.—You're always so careless, but ________ let's see what we can do about it.
—Language learning is much ________ for children.—Yeah, I quite agree. Their minds are more flexible.