完形填空。
In the past all letters were sent by train or ship. Now most letters are__1__sent by train or ship, but
some are sent by air. You send a letter__2__so that your friend may receive it sooner. A letter__3__
about twelve days to go from England to India by train or by ship. A letter can get to India by air__4__
five days now, but__5__the time may be made shorter.
__6__people were afraid to send letters by air. They thought that the plane might fall and
their friends might not receive the letter. So they sent two letters: one letter by air and__7__by train or
ship. They wanted to__8__that the letters would be received. Planes are now almost as safe__9__
trains or ships.__10__letters are sent by air,

(     )1. A. still           (     )2. A. by ship         (     )3. A. takes           (     )4. A. in             (     )5. A. by then         (     )6. A. At last         (     )7. A. other           (     )8. A. know           (     )9. A. as             (     )10. A. More or less

B. just               B. by air             B. take               B. on                 B. soon               B. At times           B. the others         B. see               B. the same as       B. Much and much

C. already       C. by train       C. took           C. after         C. quickly       C. At first       C. the other     C. hear           C. than           C. More and more

D. yet           D. by bus         D. is taken       D. during         D. fast           D. So far         D. another       D. make sure     D. like           D. Many and many

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