____to caring for an Ebola(埃博拉) patient, the nurse found herself also infected, feeling hopeless.
The invention of steam engine greatly sped up the industrial revolution, which _____ a lot to the take-off of the world.
The quality of a processed food largely ______ the raw material and the way it _______.
—Why is he feeling down today? —Because the suggestion he________has been turned down.
________in his test papers,he didn’t notice my coming.
________cleaning the yard and making up the beds for the old,we also read newspapers for them and had chats with them.