【C14】A．before longB．after longC．long beforeD．long after

When does education begin？A．Before one enters school.B．After one enters school.C．After one

The cure for lung cancer______.A．can be found before longB．is available if one needs itC．i

【C5】A．no longerB．for longC．before longD．long before

You will get the message ______.A、not long afterB、not longC、before longD、long before

A．after hisB．before hisC．after itsD．before its

One day on the moon is _____.A. two Earth week longB. two Earth weeks longC. two Ea