—Did you hear about the air crash? I feel so lucky! —Yes.If you _____ that flight, I _____ speaking to you now.
If Tim carries on working like this, he'll ________ sooner or later.
All the doctors in the hospital insisted that he________ badly wounded and that he________ at once.
This crop does not do well in soils ________the one for which it has been specially developed.
In the face of ________ failure, it is the most important to keep up ________ good state of mind.
Sheep on a remote Scottish island are gradually shrinking _______ global warming, according to a study published in the journal Science.