This new kind of chemicals will help keep the air, soil and water________ from pollution.
| A．free | B．empty | C．loose | D．short |
__________ what happens in the outside world, fill your inside world with peace, love, and joy.
| A．Instead of |
| B．In addition to |
| C．Regardless of |
| D．According to |
He could have finished it on schedule, but __________ he fell behind.
| A．somehow |
| B．anyhow |
| C．otherwise |
| D．meanwhile |
Now that she is out of job, Lucy __________ going back to school, but she hasn't decided yet.
| A．had considered |
| B．has been considering |
| C．considered |
| D．is going to consider |
The first use of atomic weapons was in 1945, and their power __________ increased enormously eversince.
| A．is |
| B．was |
| C．has been |
| D．had been |
I__________ letters this morning and I__________ for four hours so far.
| A．will write; wrote |
| B．have written; have written |
| C．was writing; wrote |
| D．have been writing; have written |