They are very tired. They ..... {instal} new sophisticated equipment in our office.

Tomorrow we ....... {sign} a very important contract with our French partners.

We ...... {meet} several potential partners at the exhibition so far. 

There ...... {be} many disasters in southeastern Asia in the past few decades. 

 Jack ..... {work} in the bank's office for over two years. and he likes it there. 

The managers ...{discuss} the problem the whole afternoon, but they have not finished yet.

My family ...... {have} this shop for two years. 

My sister....... { study}.economics for 7 semesters.

We .....{see} our competitors since last Christmas.

I.... {know} Herbie for half a year.