1.In 1990,it ___ more than five billion.2.Now at the beginning of the 21st the world's population ___ six billion.3.four hundred years ago,the number___over 500 million.用reach 、pass 、be 填空.尽量不要用重复的词填空.
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![1.In 1990,it ___ more than five billion.2.Now at the beginning of the 21st the world's population ___ six billion.3.four hundred years ago,the number___over 500 million.用reach 、pass 、be 填空.尽量不要用重复的词填空.](/uploads/image/z/4212318-30-8.jpg?t=1.In+1990%2Cit+___+more+than+five+billion.2.Now+at+the+beginning+of+the+21st+the+world%27s+population+___+six+billion.3.four+hundred+years+ago%2Cthe+number___over+500+million.%E7%94%A8reach+%E3%80%81pass+%E3%80%81be+%E5%A1%AB%E7%A9%BA.%E5%B0%BD%E9%87%8F%E4%B8%8D%E8%A6%81%E7%94%A8%E9%87%8D%E5%A4%8D%E7%9A%84%E8%AF%8D%E5%A1%AB%E7%A9%BA.)
1.In 1990,it ___ more than five billion.2.Now at the beginning of the 21st the world's population ___ six billion.3.four hundred years ago,the number___over 500 million.用reach 、pass 、be 填空.尽量不要用重复的词填空.
1.In 1990,it ___ more than five billion.
2.Now at the beginning of the 21st the world's population ___ six billion.
3.four hundred years ago,the number___over 500 million.
用reach 、pass 、be 填空.尽量不要用重复的词填空.
1.In 1990,it ___ more than five billion.2.Now at the beginning of the 21st the world's population ___ six billion.3.four hundred years ago,the number___over 500 million.用reach 、pass 、be 填空.尽量不要用重复的词填空.
was
has reached
was
1.In 1990, it _reached__ more than five billion.
2.Now at the beginning of the 21st the world's population _passes__ six billion.
3.four hundred years ago, the number_was__over 500 million.