1. With the great weight ________ off her mind，she passed the test successfully．
A．taking B．taken C．take D．to be taken
2. Let’s put off the picnic until next week ________ the weather may be better．
A．since B．if C．as D．when
3．The first edition ________ in 1955 and ________ a best seller ever since．
A．was published；had been B．had been published；had been
C．has been published；has been； D．was published；has been
