＿＿＿＿being March 12th, they planted trees on the hill.
| A．That | B．It is | C．It | D．This |
The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
—Go now?
— It's too late; tomorrow will be a _________time for you to visit them.
| A．better | B．good | C．best | D．more |
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.
| A．sceptical | B．addicted | C．available | D．sensitive |
—Must I turn off the gas after cooking?
—Of course. You can never be____ careful with that.
| A．enough | B．too | C．so | D．very |
I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.
| A．However | B．Anyway | C．Therefore | D．Though |