We should avoid______ untrue claims about the products or services.
| A．falling behind |
| B．falling for |
| C．to fall behind |
| D．to fall for |
The book was written in 1946, the education system has witnessed great charges.
| A．when | B．during which |
| C．since then | D．since when |
In this seaside resort, you can all the comfort and convenience of modern tourism.
| A．enjoy | B．apply |
| C．receive | D．achieve |
The country has already sent up three unmanned spacecraft, the most recent at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
They two free tickets to Canada, otherwise they’d never have been able to afford to go.
| A．had got | B．got | C．have got | D．get |
It is not socially for parents to leave children unattended at that age.
| A．accessible | B．adorable |
| C．adaptable | D．acceptable |