Giải thích giúp mình nữa ạ
wondered (1) ___________ we are alone in the universe or we’ve got company in the shape of aliens. People have claimed to have met aliens, seen UFOs and some people even saythey’ve been abducted by extraterrestrials. But what do we really know about them - if they (2) ___________ at all? Ever since we realised there (3) ___________ be something out there our imaginations have created thousands of bizarre creatures. But at the moment no one knows what an alien might look like. Even if we do ever come (4)___________aliens in space, most scientists agree they probably won’t look like little green men. (5)___________aliens exists, experts reckon they’re probably very small and look something like a bug. Over the years thousands of people have been (6) ___________that we Earthlings have been visited by aliens from other civilizations. But there’s one problem with this - the number of aliens(7)___________discovered is zero. There are lots of photos and films of apparent (8)___________but most have a logical explanation like aeroplanes and military exercises. Or they’re hoaxes!- extraterrestrial (n): sinh vật ngoài hành tinh - civilisation (n): nên văn minh
1. A. when B. where C. whether D. whereas.
2. A. exist B. happen C. live D. survive
3. A. can B. must C. may D. might
4. A. over B. through C. across D. along
5. A. Although B. If C. Because D. Since
6. A. convinced B. satisfied C. affected D. consulted
7. A. absolutely B. mainly C. immediately D. actually
8. A. visions B. sightings C. signs D. signals
