25. —Some Chinese students find it difficult to understand native speakers when in London.
—Exactly, ________ they’ve learned a lot about grammar and known many words.
| A．if only | B．now that | C．as if | D．even if |
Tom in the library every night over the last three months.
| A．works | B．worked |
| C．has been working | D．had been working |
My English teacher, as well as her students, ____ to perform at the party last night.
| A．were invited | B．was invited |
| C．have been invited | D．has been invited |
__________ something unexpected happens，I will meet you at the school gate tomorrow
morning.
| A．When | B．Unless | C．Since | D．If |
Career advisors often suggest people find a job _______ they can get a sense of achievement.
| A．that | B．what | C．where | D．which |
Washing hands thoroughly is one of the effective ways to avoid ________ by virus.
| A．being infected | B．infecting |
| C．to be infected | D．to infect |