I always the UFOs 中填believe 还是believe in?

I always the UFOs 中填believe 还是believe in? 求一道完形填空题第一句是 I always believed in UFOs 用所给单词的适当形式填空.Many people today like reading stories about UFOs.Many people in different countries are 1.___ the UFOs.But what are UFOs?There are some different saying for UFOs.2.___ those saying,the most popular one for UFOs i it's sometimes ____that ufos have been seen high up in the sky.空里应该填什么 i think its___useful advice ,so i will always remember it.填a an the 选一个. I shall always remember _(meet)you for the first time.填什么?为什么? I always go()work()seven twenty()the morning填什么介词 from then i am always the winner__?__us two这个空怎么填 定语从句I like the place __ __is always warm两个空,怎样填? I sing the same song________ he always sings.填 as ,that,which哪个对 I think ( ) (pay) over the Internet is always safe.括号内应填 pay 的什么形式? I'm always on the i always dream of ( )future that i can spend all the time painting.括号里填什么冠词.i always dream of ( )future that i can spend all the time painting.括号里填什么冠词. The students of Class 2 always ______(study) hard横线中填什么 My sister likes the p_______on the skirt.怎么填?I have f_______friends here,so i always stay atweekends.怎么填?每空只限一个词 I like the places where the weather ____ always warm.这个空应该填“are”还是“is”?为什么? I am always the last one to school in the moring中间空的填get ,getting, to get ,got i have never opposed the project ,____i have always supported it___为什么填on the countrary不填in other words.