When the spaceship leaves the earth at very high speed, the astronauts feel __________ they are being crushed against the spaceship floor.
A.as if | B.even though | C.even if | D.what if |
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When the spaceship leaves the earth at very high speed, the astronauts feel __________ they are being crushed against the spaceship floor.
A.as if | B.even though | C.even if | D.what if |
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