高一英語適當時態(tài)填空,
By the end of July,1969,the American government（ ）(pay) over $5 billion on the space programme.Humankind （ ）(not,have) any other greater project than Project Apollo.
Landing on the moon requires a lot of time and effort.Scientists and engines( )(work) hard since they began to design the spaceship.They made five sets of plans for the Moon landing.They had intend to send a spaceship weighing 150000 pounds directly to the moon.
But the meant humans( )(land)on the moon many years later.Americans( )(not,spend)much more money and wait for years to build a huge rocket.They( )(send) five parts of a spaceship into space wieh five smaller rockets.Engineers on the ground ( )(have) the five separate parts "meet" in space.But there ( )(be)serious problems if the five parts failed to come together at the same time.At last,NASA decided to adopt a plan suggest by an engineer named Eagle( )(separate)from Apollo and land on the Moon.
Apollo( )(leave)for the Moon soon.And an exciting day( )(be about to,come)