For forty years Jane has been ___________ about making the rest of the world understand and respect the life of these animals.
As we all know, it is usually cold in this place in January, but it _____ be warm sometimes.
40 kilometers _____ Chengdu lies a town, _____ suffered great losses in the earthquake, but is now on the road to recovering.
—My son is addicted to drugs. He isn’t hopeless, is he? —Yes, _____ he mends his ways and starts all over.
Look at the pride on Tom’s face. He _____to have been praised by the manager just now.
The machine _____ . It hasn’t worked for years and no one wants to repair it.