这几道题目希望能尽快回答并解释下原因,

这几道题目希望能尽快回答并解释下原因,
1 Readers can ________ quiet well without knowing the exact meaning of each word.
A get over B get in C get along D get though
2 How long do you think it will be ___ China becomes a developed country?
At least 20 years ,i guess.
A that B until C when D before
3 They all went to big cities ________getting a job with higher pay.
A with the purpose of B for the purpose of C on the purpose of DAorB
4 You are always full of_______.Can you tell me the secret
Taking plenty of exercise every day.
A power B strength C force D energy
5 The boy ________ a strange muscle disease is trying to live a normal life.
A suffered B suffered from C suffering D suffering from
6 This is the first time that i ________ at the meeting.
A had spoken B have spoken C am D was
7 As far as i _______,i don't object to your decision.
A concern B am concerning Cam concerned D will concern
8 While watching TV,________
A the doorbell rang B the door rings
C we heard the doorball ring D we heard the doorbelll rings