The reason ______ Old French made contributions to Middle English is ______ English borrowed many words from it.
.Please tell me how the accident _______.I am still in the dark.
.Having heard the customers’ ________, they decided to improve their products.
Everything he ________ away from him before was returned to his hometown.
The quality of the teachers will influence the students,and ________, the quality of the students will influence the teachers.
. --- This kind of food is said to contain poisonous chemicals. --- So why not _____ it?