Fill in the missing words according to the meaning of the sentence.

We have thirty-eight students in our class. There are tw　　 boys and e　　 girls.

—The supermarket is crowded（拥挤的）. There are ___________ people there.
—Yeah, and the things there are always ______________ expensive（贵的）.

短文填空选择恰当的单词填空，每词限用一次。（有两个多余的选项）

Pick up one of these cubes and you probably won’t be able to put it down．How hard（1）_____ it be to rearrange（重新排列）the nine colored squares on each side of the cube? In fact，there are 43×10³⁰ possibilities! It has been 31 years since the cubes were sold in stores around the world．Its（2） _____，however， began years earlier as a simple classroom example．In 1974，Dr．Erno Rubik（3） _____ the“Magic Cube”as he called it． He did this to help his students understand 3-D concepts．This classroom model was quickly changed into a （4） _____ toy．In 1979，Ideal Toys bought the rights（权利）（5） _____ sold it as“Rubik’s Cube”．The invention（6） _____ became a 1980s cultural icon

As time went（7） _____，the cube’s popularity became less，however，it made a comeback with the Internet．Now（8） _____ can go online and find many videos that show ways to solve the cube．Erik Akkersdijk of the Netherlands holds the present world record．He finished it in just 7．08 seconds l