. David_________the test for further study in the USA. Let’s have a small party to congratulate him on his success.A. has passed B. has been passing C. is passing D. had passed
If ____unsolved, the problem of food safety may lead to more serious results.
Jack is late again. It is ____of him to keep others waiting.
Though________money, his parents managed to send him to university.
It’s funny that Howard___ speak to you like your boss.
Helen has ____French and can speak fluently after a short stay with her aunt in Paris.