29．What has been studied suggest that a short nap in the afternoon_______you refreshed for the next four or five hours.
| A．will leave | B．leaves | C．must leave | D．should leave |
The boy wanted to ride his bike in the street, but his mother told him _________.
| A．not to | B．not to do |
| C．not do it | D．don't |
Generally speaking, _________ according to the directions, the drug has no side effect.
| A．when taking | B．when taken |
| C．when to take | D．when to be taken |
I thought her honest _________ I met her.
| A．first time | B．for the first time |
| C．the first time | D．by the first time |
No sooner _________ he sat down to read the newspaper _________ the bell rang.
| A．do; when | B．did ； than |
| C．had ； then | D．had ； than |
Betty shows great interest in the poem now, but she thought it boring _________ she read it.
| A．at the first time | B．the first time |
| C．for the first time | D．at first |