—Is there any vaccine(疫苗) against H1N1 flu that can be used on humans?—No, but scientists are working to develop ________ .
My cousin doesn't know what to _______ at the university; he can't make up his mind about his future.
The right treatment would be to _______ direct pressure to the wound to slow the bleeding.
Dr. Godfrey George _______ with Ebola in Sierra Leone died on Monday.
Though _______ experience, he managed to get a good position in a big company.
—Go for a picnic this weekend, OK?—__________. I love getting close to nature.