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【題目】Charles Darwin explained the ________ of species on earth in his book that came out in1859.

【題目】In order hot to be noticed. Jefferson ________ into the classroom while his teacher was writing on the blackboard

【題目】His study is in______: his house keeper has long since given up trying to put his papers in order.

【題目】It is eating too much junk food ______ makes him overweight.

【題目】On June 17th, an earthquake hit Chang Ning, ______ a lot of villages damaged.

【題目】He is due to ________ a conference on some current affairs, including unemployment and education, next week.

【題目】______ by the Youth League, she has made much progress this term.

【題目】Yuan Long Ping is known ______ his hybrid rice ______ an agricultural scientist.

【題目】Besides British citizens, the new traffic law will also ______ to foreign drivers.

【題目】It’s requested that a lecture ______ on this subject.