It is these poisonous products _____ can cause the symptoms of the flu, such as headaches and aching muscles.
| A．who | B．that | C．how | D．what |
—Will you join us in the Talent Show?
—Thank you，________
| A．but why not？ | B．but I’d rather not. |
| C．and I won’t. | D．and I’ll join. |
She devoted herself________to her research and it earned her a good reputation in her field.
| A．strongly | B．freely |
| C．entirely | D．extremely |
It is the third time so far that such a festival________in my hometown.
| A．is held | B．has been held |
| C．will be held | D．had been held |
I failed again，but my parents encouraged me and told me that failure________the mother of success.
| A．was | B．is |
| C．be | D．been |
—I said hello to you in the street yesterday，but you________me completely.
—I’m sorry.Maybe I didn’t notice you.
| A．cheated | B．hid |
| C．ignored | D．recognized |